diff --git a/SOURCES/dnsmasq-2.66-Support-IPv6-assignment-based-on-MAC-for-DHCPv6.patch b/SOURCES/dnsmasq-2.66-Support-IPv6-assignment-based-on-MAC-for-DHCPv6.patch new file mode 100644 index 0000000..b615499 --- /dev/null +++ b/SOURCES/dnsmasq-2.66-Support-IPv6-assignment-based-on-MAC-for-DHCPv6.patch @@ -0,0 +1,1255 @@ +From 989461c95c82ac183eb3b01d2636b54e0731568f Mon Sep 17 00:00:00 2001 +From: Tomas Hozza +Date: Thu, 19 Feb 2015 17:37:52 +0100 +Subject: [PATCH] Support IPv6 assignment based on MAC for DHCPv6 + +Support added to --dhcp-host and --dhcp-mac + +Signed-off-by: Tomas Hozza +--- + man/dnsmasq.8 | 15 ++++--- + src/dhcp-common.c | 104 ++++++++++++++++++++++++++++++++++++++++++ + src/dhcp.c | 83 ---------------------------------- + src/dhcp6-protocol.h | 1 + + src/dhcp6.c | 124 +++++++++++++++++++++++++++++++++------------------ + src/dnsmasq.c | 2 +- + src/dnsmasq.h | 28 ++++++------ + src/helper.c | 69 ++++++++++++++-------------- + src/lease.c | 60 +++++++++++++++---------- + src/option.c | 1 + + src/radv-protocol.h | 7 +++ + src/radv.c | 14 +++--- + src/rfc3315.c | 104 ++++++++++++++++++++++++++++++++---------- + 13 files changed, 376 insertions(+), 236 deletions(-) + +diff --git a/man/dnsmasq.8 b/man/dnsmasq.8 +index 045dee5..d0eb895 100644 +--- a/man/dnsmasq.8 ++++ b/man/dnsmasq.8 +@@ -733,7 +733,8 @@ the same subnet as some valid dhcp-range. For + subnets which don't need a pool of dynamically allocated addresses, + use the "static" keyword in the dhcp-range declaration. + +-It is allowed to use client identifiers rather than ++It is allowed to use client identifiers (called client ++DUID in IPv6-land rather than + hardware addresses to identify hosts by prefixing with 'id:'. Thus: + .B --dhcp-host=id:01:02:03:04,..... + refers to the host with client identifier 01:02:03:04. It is also +@@ -748,11 +749,11 @@ IPv6 addresses may contain only the host-identifier part: + .B --dhcp-host=laptop,[::56] + in which case they act as wildcards in constructed dhcp ranges, with + the appropriate network part inserted. +-Note that in IPv6 DHCP, the hardware address is not normally +-available, so a client must be identified by client-id (called client +-DUID in IPv6-land) or hostname. ++Note that in IPv6 DHCP, the hardware address may not be ++available, though it normally is for direct-connected clients, or ++clients using DHCP relays which support RFC 6939. + +-The special option id:* means "ignore any client-id ++For DHCPv4, the special option id:* means "ignore any client-id + and use MAC addresses only." This is useful when a client presents a client-id sometimes + but not others. + +@@ -968,7 +969,7 @@ this to set a different printer server for hosts in the class + "accounts" than for hosts in the class "engineering". + .TP + .B \-4, --dhcp-mac=set:, +-(IPv4 only) Map from a MAC address to a tag. The MAC address may include ++Map from a MAC address to a tag. The MAC address may include + wildcards. For example + .B --dhcp-mac=set:3com,01:34:23:*:*:* + will set the tag "3com" for any host whose MAC address matches the pattern. +@@ -1274,7 +1275,7 @@ every call to the script. + DNSMASQ_IAID containing the IAID for the lease. If the lease is a + temporary allocation, this is prefixed to 'T'. + +- ++DNSMASQ_MAC containing the MAC address of the client, if known. + + Note that the supplied hostname, vendorclass and userclass data is + only supplied for +diff --git a/src/dhcp-common.c b/src/dhcp-common.c +index 9321e92..242bd72 100644 +--- a/src/dhcp-common.c ++++ b/src/dhcp-common.c +@@ -253,6 +253,110 @@ int match_bytes(struct dhcp_opt *o, unsigned char *p, int len) + return 0; + } + ++int config_has_mac(struct dhcp_config *config, unsigned char *hwaddr, int len, int type) ++{ ++ struct hwaddr_config *conf_addr; ++ ++ for (conf_addr = config->hwaddr; conf_addr; conf_addr = conf_addr->next) ++ if (conf_addr->wildcard_mask == 0 && ++ conf_addr->hwaddr_len == len && ++ (conf_addr->hwaddr_type == type || conf_addr->hwaddr_type == 0) && ++ memcmp(conf_addr->hwaddr, hwaddr, len) == 0) ++ return 1; ++ ++ return 0; ++} ++ ++static int is_config_in_context(struct dhcp_context *context, struct dhcp_config *config) ++{ ++ if (!context) /* called via find_config() from lease_update_from_configs() */ ++ return 1; ++ ++ if (!(context->flags & CONTEXT_V6)) ++ { ++ if (!(config->flags & CONFIG_ADDR)) ++ return 1; ++ ++ for (; context; context = context->current) ++ if (is_same_net(config->addr, context->start, context->netmask)) ++ return 1; ++ } ++#ifdef HAVE_DHCP6 ++ else ++ { ++ if (!(config->flags & CONFIG_ADDR6) || (config->flags & CONFIG_WILDCARD)) ++ return 1; ++ ++ for (; context; context = context->current) ++ if (is_same_net6(&config->addr6, &context->start6, context->prefix)) ++ return 1; ++ } ++#endif ++ ++ return 0; ++} ++ ++struct dhcp_config *find_config(struct dhcp_config *configs, ++ struct dhcp_context *context, ++ unsigned char *clid, int clid_len, ++ unsigned char *hwaddr, int hw_len, ++ int hw_type, char *hostname) ++{ ++ int count, new; ++ struct dhcp_config *config, *candidate; ++ struct hwaddr_config *conf_addr; ++ ++ if (clid) ++ for (config = configs; config; config = config->next) ++ if (config->flags & CONFIG_CLID) ++ { ++ if (config->clid_len == clid_len && ++ memcmp(config->clid, clid, clid_len) == 0 && ++ is_config_in_context(context, config)) ++ return config; ++ ++ /* dhcpcd prefixes ASCII client IDs by zero which is wrong, but we try and ++ cope with that here */ ++ if (!(context->flags & CONTEXT_V6) && *clid == 0 && config->clid_len == clid_len-1 && ++ memcmp(config->clid, clid+1, clid_len-1) == 0 && ++ is_config_in_context(context, config)) ++ return config; ++ } ++ ++ ++ if (hwaddr) ++ for (config = configs; config; config = config->next) ++ if (config_has_mac(config, hwaddr, hw_len, hw_type) && ++ is_config_in_context(context, config)) ++ return config; ++ ++ if (hostname && context) ++ for (config = configs; config; config = config->next) ++ if ((config->flags & CONFIG_NAME) && ++ hostname_isequal(config->hostname, hostname) && ++ is_config_in_context(context, config)) ++ return config; ++ ++ ++ if (!hwaddr) ++ return NULL; ++ ++ /* use match with fewest wildcard octets */ ++ for (candidate = NULL, count = 0, config = configs; config; config = config->next) ++ if (is_config_in_context(context, config)) ++ for (conf_addr = config->hwaddr; conf_addr; conf_addr = conf_addr->next) ++ if (conf_addr->wildcard_mask != 0 && ++ conf_addr->hwaddr_len == hw_len && ++ (conf_addr->hwaddr_type == hw_type || conf_addr->hwaddr_type == 0) && ++ (new = memcmp_masked(conf_addr->hwaddr, hwaddr, hw_len, conf_addr->wildcard_mask)) > count) ++ { ++ count = new; ++ candidate = config; ++ } ++ ++ return candidate; ++} ++ + void dhcp_update_configs(struct dhcp_config *configs) + { + /* Some people like to keep all static IP addresses in /etc/hosts. +diff --git a/src/dhcp.c b/src/dhcp.c +index b95a4ba..f69183e 100644 +--- a/src/dhcp.c ++++ b/src/dhcp.c +@@ -704,89 +704,6 @@ int address_allocate(struct dhcp_context *context, + return 0; + } + +-static int is_addr_in_context(struct dhcp_context *context, struct dhcp_config *config) +-{ +- if (!context) /* called via find_config() from lease_update_from_configs() */ +- return 1; +- if (!(config->flags & CONFIG_ADDR)) +- return 1; +- for (; context; context = context->current) +- if (is_same_net(config->addr, context->start, context->netmask)) +- return 1; +- +- return 0; +-} +- +-int config_has_mac(struct dhcp_config *config, unsigned char *hwaddr, int len, int type) +-{ +- struct hwaddr_config *conf_addr; +- +- for (conf_addr = config->hwaddr; conf_addr; conf_addr = conf_addr->next) +- if (conf_addr->wildcard_mask == 0 && +- conf_addr->hwaddr_len == len && +- (conf_addr->hwaddr_type == type || conf_addr->hwaddr_type == 0) && +- memcmp(conf_addr->hwaddr, hwaddr, len) == 0) +- return 1; +- +- return 0; +-} +- +-struct dhcp_config *find_config(struct dhcp_config *configs, +- struct dhcp_context *context, +- unsigned char *clid, int clid_len, +- unsigned char *hwaddr, int hw_len, +- int hw_type, char *hostname) +-{ +- int count, new; +- struct dhcp_config *config, *candidate; +- struct hwaddr_config *conf_addr; +- +- if (clid) +- for (config = configs; config; config = config->next) +- if (config->flags & CONFIG_CLID) +- { +- if (config->clid_len == clid_len && +- memcmp(config->clid, clid, clid_len) == 0 && +- is_addr_in_context(context, config)) +- return config; +- +- /* dhcpcd prefixes ASCII client IDs by zero which is wrong, but we try and +- cope with that here */ +- if (*clid == 0 && config->clid_len == clid_len-1 && +- memcmp(config->clid, clid+1, clid_len-1) == 0 && +- is_addr_in_context(context, config)) +- return config; +- } +- +- +- for (config = configs; config; config = config->next) +- if (config_has_mac(config, hwaddr, hw_len, hw_type) && +- is_addr_in_context(context, config)) +- return config; +- +- if (hostname && context) +- for (config = configs; config; config = config->next) +- if ((config->flags & CONFIG_NAME) && +- hostname_isequal(config->hostname, hostname) && +- is_addr_in_context(context, config)) +- return config; +- +- /* use match with fewest wildcard octets */ +- for (candidate = NULL, count = 0, config = configs; config; config = config->next) +- if (is_addr_in_context(context, config)) +- for (conf_addr = config->hwaddr; conf_addr; conf_addr = conf_addr->next) +- if (conf_addr->wildcard_mask != 0 && +- conf_addr->hwaddr_len == hw_len && +- (conf_addr->hwaddr_type == hw_type || conf_addr->hwaddr_type == 0) && +- (new = memcmp_masked(conf_addr->hwaddr, hwaddr, hw_len, conf_addr->wildcard_mask)) > count) +- { +- count = new; +- candidate = config; +- } +- +- return candidate; +-} +- + void dhcp_read_ethers(void) + { + FILE *f = fopen(ETHERSFILE, "r"); +diff --git a/src/dhcp6-protocol.h b/src/dhcp6-protocol.h +index 50d84a9..8cef0e8 100644 +--- a/src/dhcp6-protocol.h ++++ b/src/dhcp6-protocol.h +@@ -58,6 +58,7 @@ + #define OPTION6_REMOTE_ID 37 + #define OPTION6_SUBSCRIBER_ID 38 + #define OPTION6_FQDN 39 ++#define OPTION6_CLIENT_MAC 79 + + /* replace this with the real number when allocated. + defining this also enables the relevant code. */ +diff --git a/src/dhcp6.c b/src/dhcp6.c +index de3187d..5f4d298 100644 +--- a/src/dhcp6.c ++++ b/src/dhcp6.c +@@ -18,16 +18,25 @@ + + #ifdef HAVE_DHCP6 + ++#include ++ + struct iface_param { + struct dhcp_context *current; + struct in6_addr fallback; + int ind, addr_match; + }; + ++struct mac_param { ++ struct in6_addr *target; ++ unsigned char *mac; ++ unsigned int maclen; ++}; ++ + static int complete_context6(struct in6_addr *local, int prefix, + int scope, int if_index, int flags, + unsigned int preferred, unsigned int valid, void *vparam); + ++static int find_mac(int family, char *addrp, char *mac, size_t maclen, void *parmv); + static int make_duid1(int index, unsigned int type, char *mac, size_t maclen, void *parm); + + void dhcp6_init(void) +@@ -156,7 +165,7 @@ void dhcp6_packet(time_t now) + + if (!iface_enumerate(AF_INET6, &parm, complete_context6)) + return; +- ++ + if (daemon->if_names || daemon->if_addrs) + { + +@@ -171,7 +180,7 @@ void dhcp6_packet(time_t now) + lease_prune(NULL, now); /* lose any expired leases */ + + port = dhcp6_reply(parm.current, if_index, ifr.ifr_name, &parm.fallback, +- sz, IN6_IS_ADDR_MULTICAST(&from.sin6_addr), now); ++ sz, &from.sin6_addr, now); + + lease_update_file(now); + lease_update_dns(0); +@@ -189,6 +198,75 @@ void dhcp6_packet(time_t now) + } + } + ++void get_client_mac(struct in6_addr *client, int iface, unsigned char *mac, unsigned int *maclenp, unsigned int *mactypep) ++{ ++ /* Recieving a packet from a host does not populate the neighbour ++ cache, so we send a neighbour discovery request if we can't ++ find the sender. Repeat a few times in case of packet loss. */ ++ ++ struct neigh_packet neigh; ++ struct sockaddr_in6 addr; ++ struct mac_param mac_param; ++ int i; ++ ++ neigh.type = ND_NEIGHBOR_SOLICIT; ++ neigh.code = 0; ++ neigh.reserved = 0; ++ neigh.target = *client; ++ // https://tools.ietf.org/html/rfc4443#section-2.3 ++ neigh.checksum = 0; ++ ++ memset(&addr, 0, sizeof(addr)); ++#ifdef HAVE_SOCKADDR_SA_LEN ++ addr.sin6_len = sizeof(struct sockaddr_in6); ++#endif ++ addr.sin6_family = AF_INET6; ++ addr.sin6_port = htons(IPPROTO_ICMPV6); ++ addr.sin6_addr = *client; ++ addr.sin6_scope_id = iface; ++ ++ mac_param.target = client; ++ mac_param.maclen = 0; ++ mac_param.mac = mac; ++ ++ for (i = 0; i < 5; i++) ++ { ++ struct timespec ts; ++ ++ iface_enumerate(AF_UNSPEC, &mac_param, find_mac); ++ ++ if (mac_param.maclen != 0) ++ break; ++ ++ sendto(daemon->icmp6fd, &neigh, sizeof(neigh), 0, (struct sockaddr *)&addr, sizeof(addr)); ++ ++ ts.tv_sec = 0; ++ ts.tv_nsec = 100000000; /* 100ms */ ++ nanosleep(&ts, NULL); ++ } ++ ++ *maclenp = mac_param.maclen; ++ *mactypep = ARPHRD_ETHER; ++} ++ ++static int find_mac(int family, char *addrp, char *mac, size_t maclen, void *parmv) ++{ ++ struct mac_param *parm = parmv; ++ ++ if (family == AF_INET6 && IN6_ARE_ADDR_EQUAL(parm->target, addrp)) ++ { ++ if (maclen <= DHCP_CHADDR_MAX) ++ { ++ parm->maclen = maclen; ++ memcpy(parm->mac, mac, maclen); ++ } ++ ++ return 0; /* found, abort */ ++ } ++ ++ return 1; ++} ++ + static int complete_context6(struct in6_addr *local, int prefix, + int scope, int if_index, int flags, unsigned int preferred, + unsigned int valid, void *vparam) +@@ -400,48 +478,6 @@ int config_valid(struct dhcp_config *config, struct dhcp_context *context, struc + return 0; + } + +-static int is_config_in_context6(struct dhcp_context *context, struct dhcp_config *config) +-{ +- if (!(config->flags & CONFIG_ADDR6) || +- (config->flags & CONFIG_WILDCARD)) +- +- return 1; +- +- for (; context; context = context->current) +- if (is_same_net6(&config->addr6, &context->start6, context->prefix)) +- return 1; +- +- return 0; +-} +- +- +-struct dhcp_config *find_config6(struct dhcp_config *configs, +- struct dhcp_context *context, +- unsigned char *duid, int duid_len, +- char *hostname) +-{ +- struct dhcp_config *config; +- +- if (duid) +- for (config = configs; config; config = config->next) +- if (config->flags & CONFIG_CLID) +- { +- if (config->clid_len == duid_len && +- memcmp(config->clid, duid, duid_len) == 0 && +- is_config_in_context6(context, config)) +- return config; +- } +- +- if (hostname && context) +- for (config = configs; config; config = config->next) +- if ((config->flags & CONFIG_NAME) && +- hostname_isequal(config->hostname, hostname) && +- is_config_in_context6(context, config)) +- return config; +- +- return NULL; +-} +- + void make_duid(time_t now) + { + if (daemon->duid_config) +diff --git a/src/dnsmasq.c b/src/dnsmasq.c +index b0f984d..3c0d7e7 100644 +--- a/src/dnsmasq.c ++++ b/src/dnsmasq.c +@@ -203,7 +203,7 @@ int main (int argc, char **argv) + dhcp_init(); + + # ifdef HAVE_DHCP6 +- if (daemon->doing_ra) ++ if (daemon->doing_ra || daemon->doing_dhcp6) + ra_init(now); + + if (daemon->doing_dhcp6) +diff --git a/src/dnsmasq.h b/src/dnsmasq.h +index ca000ad..45e3d6d 100644 +--- a/src/dnsmasq.h ++++ b/src/dnsmasq.h +@@ -530,13 +530,15 @@ struct dhcp_lease { + #ifdef HAVE_BROKEN_RTC + unsigned int length; + #endif +- int hwaddr_len, hwaddr_type; /* hw_type used for iaid in v6 */ +- unsigned char hwaddr[DHCP_CHADDR_MAX]; /* also IPv6 address */ ++ int hwaddr_len, hwaddr_type; ++ unsigned char hwaddr[DHCP_CHADDR_MAX]; + struct in_addr addr, override, giaddr; + unsigned char *extradata; + unsigned int extradata_len, extradata_size; + int last_interface; + #ifdef HAVE_DHCP6 ++ struct in6_addr addr6; ++ int iaid; + struct slaac_address { + struct in6_addr addr, local; + time_t ping_time; +@@ -724,6 +726,7 @@ struct dhcp_context { + #define CONTEXT_RA 8192 + #define CONTEXT_CONF_USED 16384 + #define CONTEXT_USED 32768 ++#define CONTEXT_V6 65536 + + struct ping_result { + struct in_addr addr; +@@ -1050,12 +1053,6 @@ struct dhcp_context *narrow_context(struct dhcp_context *context, + int address_allocate(struct dhcp_context *context, + struct in_addr *addrp, unsigned char *hwaddr, int hw_len, + struct dhcp_netid *netids, time_t now); +-int config_has_mac(struct dhcp_config *config, unsigned char *hwaddr, int len, int type); +-struct dhcp_config *find_config(struct dhcp_config *configs, +- struct dhcp_context *context, +- unsigned char *clid, int clid_len, +- unsigned char *hwaddr, int hw_len, +- int hw_type, char *hostname); + void dhcp_read_ethers(void); + struct dhcp_config *config_find_by_address(struct dhcp_config *configs, struct in_addr addr); + char *host_from_dns(struct in_addr addr); +@@ -1077,6 +1074,7 @@ struct dhcp_lease *lease6_find_by_addr(struct in6_addr *net, int prefix, u64 add + u64 lease_find_max_addr6(struct dhcp_context *context); + void lease_ping_reply(struct in6_addr *sender, unsigned char *packet, char *interface); + void lease_update_slaac(time_t now); ++void lease_set_iaid(struct dhcp_lease *lease, int iaid); + #endif + void lease_set_hwaddr(struct dhcp_lease *lease, unsigned char *hwaddr, + unsigned char *clid, int hw_len, int hw_type, int clid_len, time_t now, int force); +@@ -1188,20 +1186,18 @@ struct dhcp_context *address6_valid(struct dhcp_context *context, + struct in6_addr *taddr, + struct dhcp_netid *netids, + int plain_range); +-struct dhcp_config *find_config6(struct dhcp_config *configs, +- struct dhcp_context *context, +- unsigned char *duid, int duid_len, +- char *hostname); + struct dhcp_config *config_find_by_address6(struct dhcp_config *configs, struct in6_addr *net, + int prefix, u64 addr); + void make_duid(time_t now); + void dhcp_construct_contexts(time_t now); ++void get_client_mac(struct in6_addr *client, int iface, unsigned char *mac, ++ unsigned int *maclenp, unsigned int *mactypep); + #endif + + /* rfc3315.c */ + #ifdef HAVE_DHCP6 + unsigned short dhcp6_reply(struct dhcp_context *context, int interface, char *iface_name, +- struct in6_addr *fallback, size_t sz, int is_multicast, time_t now); ++ struct in6_addr *fallback, size_t sz, struct in6_addr *client_addr, time_t now); + #endif + + /* dhcp-common.c */ +@@ -1221,6 +1217,12 @@ int lookup_dhcp_opt(int prot, char *name); + int lookup_dhcp_len(int prot, int val); + char *option_string(int prot, unsigned int opt, unsigned char *val, + int opt_len, char *buf, int buf_len); ++struct dhcp_config *find_config(struct dhcp_config *configs, ++ struct dhcp_context *context, ++ unsigned char *clid, int clid_len, ++ unsigned char *hwaddr, int hw_len, ++ int hw_type, char *hostname); ++int config_has_mac(struct dhcp_config *config, unsigned char *hwaddr, int len, int type); + #ifdef HAVE_LINUX_NETWORK + void bindtodevice(int fd); + #endif +diff --git a/src/helper.c b/src/helper.c +index ab691b7..c6838ba 100644 +--- a/src/helper.c ++++ b/src/helper.c +@@ -61,6 +61,10 @@ struct script_data + #else + time_t expires; + #endif ++#ifdef HAVE_DHCP6 ++ struct in6_addr addr6; ++ int iaid, vendorclass_count; ++#endif + unsigned char hwaddr[DHCP_CHADDR_MAX]; + char interface[IF_NAMESIZE]; + +@@ -215,8 +219,6 @@ int create_helper(int event_fd, int err_fd, uid_t uid, gid_t gid, long max_fd) + continue; + + +- if (!is6) +- { + /* stringify MAC into dhcp_buff */ + p = daemon->dhcp_buff; + if (data.hwaddr_type != ARPHRD_ETHER || data.hwaddr_len == 0) +@@ -227,7 +229,6 @@ int create_helper(int event_fd, int err_fd, uid_t uid, gid_t gid, long max_fd) + if (i != data.hwaddr_len - 1) + p += sprintf(p, ":"); + } +- } + + /* supplied data may just exceed normal buffer (unlikely) */ + if ((data.hostname_len + data.ed_len + data.clid_len) > MAXDNAME && +@@ -239,7 +240,6 @@ int create_helper(int event_fd, int err_fd, uid_t uid, gid_t gid, long max_fd) + continue; + + /* CLID into packet */ +- if (!is6) + for (p = daemon->packet, i = 0; i < data.clid_len; i++) + { + p += sprintf(p, "%.2x", buf[i]); +@@ -247,24 +247,17 @@ int create_helper(int event_fd, int err_fd, uid_t uid, gid_t gid, long max_fd) + p += sprintf(p, ":"); + } + #ifdef HAVE_DHCP6 +- else ++ if (is6) + { + /* or IAID and server DUID for IPv6 */ +- sprintf(daemon->dhcp_buff3, "%s%u", data.flags & LEASE_TA ? "T" : "", data.hwaddr_type); +- for (p = daemon->packet, i = 0; i < daemon->duid_len; i++) ++ sprintf(daemon->dhcp_buff3, "%s%u", data.flags & LEASE_TA ? "T" : "", data.iaid); ++ for (p = daemon->dhcp_packet.iov_base, i = 0; i < daemon->duid_len; i++) + { + p += sprintf(p, "%.2x", daemon->duid[i]); + if (i != daemon->duid_len - 1) + p += sprintf(p, ":"); + } + +- /* duid not MAC for IPv6 */ +- for (p = daemon->dhcp_buff, i = 0; i < data.clid_len; i++) +- { +- p += sprintf(p, "%.2x", buf[i]); +- if (i != data.clid_len - 1) +- p += sprintf(p, ":"); +- } + } + #endif + +@@ -293,7 +286,7 @@ int create_helper(int event_fd, int err_fd, uid_t uid, gid_t gid, long max_fd) + inet_ntop(AF_INET, &data.addr, daemon->addrbuff, ADDRSTRLEN); + #ifdef HAVE_DHCP6 + else +- inet_ntop(AF_INET6, &data.hwaddr, daemon->addrbuff, ADDRSTRLEN); ++ inet_ntop(AF_INET6, &data.addr6, daemon->addrbuff, ADDRSTRLEN); + #endif + + /* file length */ +@@ -329,9 +322,9 @@ int create_helper(int event_fd, int err_fd, uid_t uid, gid_t gid, long max_fd) + + if (is6) + { +- lua_pushstring(lua, daemon->dhcp_buff); +- lua_setfield(lua, -2, "client_duid"); + lua_pushstring(lua, daemon->packet); ++ lua_setfield(lua, -2, "client_duid"); ++ lua_pushstring(lua, daemon->dhcp_packet.iov_base); + lua_setfield(lua, -2, "server_duid"); + lua_pushstring(lua, daemon->dhcp_buff3); + lua_setfield(lua, -2, "iaid"); +@@ -375,12 +368,16 @@ int create_helper(int event_fd, int err_fd, uid_t uid, gid_t gid, long max_fd) + if (!is6) + buf = grab_extradata_lua(buf, end, "vendor_class"); + #ifdef HAVE_DHCP6 +- else +- for (i = 0; i < data.hwaddr_len; i++) +- { +- sprintf(daemon->dhcp_buff2, "vendor_class%i", i); +- buf = grab_extradata_lua(buf, end, daemon->dhcp_buff2); +- } ++ else if (data.vendorclass_count != 0) ++ { ++ sprintf(daemon->dhcp_buff2, "vendor_class_id"); ++ buf = grab_extradata_lua(buf, end, daemon->dhcp_buff2); ++ for (i = 0; i < data.vendorclass_count - 1; i++) ++ { ++ sprintf(daemon->dhcp_buff2, "vendor_class%i", i); ++ buf = grab_extradata_lua(buf, end, daemon->dhcp_buff2); ++ } ++ } + #endif + + buf = grab_extradata_lua(buf, end, "supplied_hostname"); +@@ -423,7 +420,7 @@ int create_helper(int event_fd, int err_fd, uid_t uid, gid_t gid, long max_fd) + lua_setfield(lua, -2, "old_hostname"); + } + +- if (!is6) ++ if (!is6 || data.hwaddr_len != 0) + { + lua_pushstring(lua, daemon->dhcp_buff); + lua_setfield(lua, -2, "mac_address"); +@@ -476,12 +473,15 @@ int create_helper(int event_fd, int err_fd, uid_t uid, gid_t gid, long max_fd) + + if (data.action != ACTION_TFTP) + { ++#ifdef HAVE_DHCP6 + if (is6) + { + my_setenv("DNSMASQ_IAID", daemon->dhcp_buff3, &err); +- my_setenv("DNSMASQ_SERVER_DUID", daemon->packet, &err); ++ my_setenv("DNSMASQ_SERVER_DUID", daemon->dhcp_packet.iov_base, &err); ++ if (data.hwaddr_len != 0) ++ my_setenv("DNSMASQ_MAC", daemon->dhcp_buff, &err); + } +- ++#endif + if (!is6 && data.clid_len != 0) + my_setenv("DNSMASQ_CLIENT_ID", daemon->packet, &err); + +@@ -507,10 +507,10 @@ int create_helper(int event_fd, int err_fd, uid_t uid, gid_t gid, long max_fd) + #ifdef HAVE_DHCP6 + else + { +- if (data.hwaddr_len != 0) ++ if (data.vendorclass_count != 0) + { + buf = grab_extradata(buf, end, "DNSMASQ_VENDOR_CLASS_ID", &err); +- for (i = 0; i < data.hwaddr_len - 1; i++) ++ for (i = 0; i < data.vendorclass_count - 1; i++) + { + sprintf(daemon->dhcp_buff2, "DNSMASQ_VENDOR_CLASS%i", i); + buf = grab_extradata(buf, end, daemon->dhcp_buff2, &err); +@@ -570,7 +570,8 @@ int create_helper(int event_fd, int err_fd, uid_t uid, gid_t gid, long max_fd) + { + execl(daemon->lease_change_command, + p ? p+1 : daemon->lease_change_command, +- action_str, daemon->dhcp_buff, daemon->addrbuff, hostname, (char*)NULL); ++ action_str, is6 ? daemon->packet : daemon->dhcp_buff, ++ daemon->addrbuff, hostname, (char*)NULL); + err = errno; + } + /* failed, send event so the main process logs the problem */ +@@ -656,8 +657,6 @@ void queue_script(int action, struct dhcp_lease *lease, char *hostname, time_t n + unsigned int hostname_len = 0, clid_len = 0, ed_len = 0; + int fd = daemon->dhcpfd; + #ifdef HAVE_DHCP6 +- int is6 = !!(lease->flags & (LEASE_TA | LEASE_NA)); +- + if (!daemon->dhcp) + fd = daemon->dhcp6fd; + #endif +@@ -677,10 +676,10 @@ void queue_script(int action, struct dhcp_lease *lease, char *hostname, time_t n + + buf->action = action; + buf->flags = lease->flags; +-#ifdef HAVE_DHCP6 +- if (is6) +- buf->hwaddr_len = lease->vendorclass_count; +- else ++#ifdef HAVE_DHCP6 ++ buf->vendorclass_count = lease->vendorclass_count; ++ buf->addr6 = lease->addr6; ++ buf->iaid = lease->iaid; + #endif + buf->hwaddr_len = lease->hwaddr_len; + buf->hwaddr_type = lease->hwaddr_type; +diff --git a/src/lease.c b/src/lease.c +index b85cf57..e5fe8a6 100644 +--- a/src/lease.c ++++ b/src/lease.c +@@ -108,6 +108,7 @@ void lease_init(time_t now) + { + char *s = daemon->dhcp_buff2; + int lease_type = LEASE_NA; ++ int iaid; + + if (s[0] == 'T') + { +@@ -115,12 +116,12 @@ void lease_init(time_t now) + s++; + } + +- hw_type = strtoul(s, NULL, 10); ++ iaid = strtoul(s, NULL, 10); + + if ((lease = lease6_allocate(&addr.addr.addr6, lease_type))) + { +- lease_set_hwaddr(lease, NULL, (unsigned char *)daemon->packet, 0, hw_type, clid_len, now, 0); +- ++ lease_set_hwaddr(lease, NULL, (unsigned char *)daemon->packet, 0, 0, clid_len, now, 0); ++ lease_set_iaid(lease, iaid); + if (strcmp(daemon->dhcp_buff, "*") != 0) + lease_set_hostname(lease, daemon->dhcp_buff, 0, get_domain6((struct in6_addr *)lease->hwaddr), NULL); + } +@@ -187,7 +188,9 @@ void lease_update_from_configs(void) + char *name; + + for (lease = leases; lease; lease = lease->next) +- if ((config = find_config(daemon->dhcp_conf, NULL, lease->clid, lease->clid_len, ++ if (lease->flags & (LEASE_TA | LEASE_NA)) ++ continue; ++ else if ((config = find_config(daemon->dhcp_conf, NULL, lease->clid, lease->clid_len, + lease->hwaddr, lease->hwaddr_len, lease->hwaddr_type, NULL)) && + (config->flags & CONFIG_NAME) && + (!(config->flags & CONFIG_ADDR) || config->addr.s_addr == lease->addr.s_addr)) +@@ -277,10 +280,10 @@ void lease_update_file(time_t now) + ourprintf(&err, "%lu ", (unsigned long)lease->expires); + #endif + +- inet_ntop(AF_INET6, lease->hwaddr, daemon->addrbuff, ADDRSTRLEN); ++ inet_ntop(AF_INET6, &lease->addr6, daemon->addrbuff, ADDRSTRLEN); + + ourprintf(&err, "%s%u %s ", (lease->flags & LEASE_TA) ? "T" : "", +- lease->hwaddr_type, daemon->addrbuff); ++ lease->iaid, daemon->addrbuff); + ourprintf(&err, "%s ", lease->hostname ? lease->hostname : "*"); + + if (lease->clid && lease->clid_len != 0) +@@ -376,7 +379,7 @@ static int find_interface_v6(struct in6_addr *local, int prefix, + + for (lease = leases; lease; lease = lease->next) + if ((lease->flags & (LEASE_TA | LEASE_NA))) +- if (is_same_net6(local, (struct in6_addr *)&lease->hwaddr, prefix)) ++ if (is_same_net6(local, &lease->addr6, prefix)) + lease_set_interface(lease, if_index, *((time_t *)vparam)); + + return 1; +@@ -463,12 +466,12 @@ void lease_update_dns(int force) + + if (lease->fqdn) + cache_add_dhcp_entry(lease->fqdn, prot, +- prot == AF_INET ? (struct all_addr *)&lease->addr : (struct all_addr *)&lease->hwaddr, ++ prot == AF_INET ? (struct all_addr *)&lease->addr : (struct all_addr *)&lease->addr6, + lease->expires); + + if (!option_bool(OPT_DHCP_FQDN) && lease->hostname) + cache_add_dhcp_entry(lease->hostname, prot, +- prot == AF_INET ? (struct all_addr *)&lease->addr : (struct all_addr *)&lease->hwaddr, ++ prot == AF_INET ? (struct all_addr *)&lease->addr : (struct all_addr *)&lease->addr6, + lease->expires); + } + +@@ -564,10 +567,10 @@ struct dhcp_lease *lease6_find(unsigned char *clid, int clid_len, + + for (lease = leases; lease; lease = lease->next) + { +- if (!(lease->flags & lease_type) || lease->hwaddr_type != iaid) ++ if (!(lease->flags & lease_type) || lease->iaid != iaid) + continue; + +- if (memcmp(lease->hwaddr, addr, IN6ADDRSZ) != 0) ++ if (!IN6_ARE_ADDR_EQUAL(&lease->addr6, addr)) + continue; + + if ((clid_len != lease->clid_len || +@@ -604,7 +607,7 @@ struct dhcp_lease *lease6_find_by_client(struct dhcp_lease *first, int lease_typ + if (lease->flags & LEASE_USED) + continue; + +- if (!(lease->flags & lease_type) || lease->hwaddr_type != iaid) ++ if (!(lease->flags & lease_type) || lease->iaid != iaid) + continue; + + if ((clid_len != lease->clid_len || +@@ -626,8 +629,8 @@ struct dhcp_lease *lease6_find_by_addr(struct in6_addr *net, int prefix, u64 add + if (!(lease->flags & (LEASE_TA | LEASE_NA))) + continue; + +- if (is_same_net6((struct in6_addr *)lease->hwaddr, net, prefix) && +- (prefix == 128 || addr6part((struct in6_addr *)lease->hwaddr) == addr)) ++ if (is_same_net6(&lease->addr6, net, prefix) && ++ (prefix == 128 || addr6part(&lease->addr6) == addr)) + return lease; + } + +@@ -646,11 +649,11 @@ u64 lease_find_max_addr6(struct dhcp_context *context) + if (!(lease->flags & (LEASE_TA | LEASE_NA))) + continue; + +- if (is_same_net6((struct in6_addr *)lease->hwaddr, &context->start6, 64) && +- addr6part((struct in6_addr *)lease->hwaddr) > addr6part(&context->start6) && +- addr6part((struct in6_addr *)lease->hwaddr) <= addr6part(&context->end6) && +- addr6part((struct in6_addr *)lease->hwaddr) > addr) +- addr = addr6part((struct in6_addr *)lease->hwaddr); ++ if (is_same_net6(&lease->addr6, &context->start6, 64) && ++ addr6part(&lease->addr6) > addr6part(&context->start6) && ++ addr6part(&lease->addr6) <= addr6part(&context->end6) && ++ addr6part(&lease->addr6) > addr) ++ addr = addr6part(&lease->addr6); + } + + return addr; +@@ -692,6 +695,7 @@ static struct dhcp_lease *lease_allocate(void) + #ifdef HAVE_BROKEN_RTC + lease->length = 0xffffffff; /* illegal value */ + #endif ++ lease->hwaddr_len = 256; /* illegal value */ + lease->next = leases; + leases = lease; + +@@ -707,7 +711,6 @@ struct dhcp_lease *lease4_allocate(struct in_addr addr) + if (lease) + { + lease->addr = addr; +- lease->hwaddr_len = 256; /* illegal value */ + } + + return lease; +@@ -720,8 +723,9 @@ struct dhcp_lease *lease6_allocate(struct in6_addr *addrp, int lease_type) + + if (lease) + { +- memcpy(lease->hwaddr, addrp, sizeof(*addrp)) ; ++ lease->addr6 = *addrp; + lease->flags |= lease_type; ++ lease->iaid = 0; + } + + return lease; +@@ -758,6 +762,17 @@ void lease_set_expires(struct dhcp_lease *lease, unsigned int len, time_t now) + #endif + } + ++#ifdef HAVE_DHCP6 ++void lease_set_iaid(struct dhcp_lease *lease, int iaid) ++{ ++ if (lease->iaid != iaid) ++ { ++ lease->iaid = iaid; ++ lease->flags |= LEASE_CHANGED; ++ } ++} ++#endif ++ + void lease_set_hwaddr(struct dhcp_lease *lease, unsigned char *hwaddr, + unsigned char *clid, int hw_len, int hw_type, int clid_len, + time_t now, int force) +@@ -779,9 +794,6 @@ void lease_set_hwaddr(struct dhcp_lease *lease, unsigned char *hwaddr, + lease->hwaddr_type = hw_type; + lease->flags |= LEASE_CHANGED; + file_dirty = 1; /* run script on change */ +-#ifdef HAVE_DHCP6 +- change = 1; +-#endif + } + + /* only update clid when one is available, stops packets +diff --git a/src/option.c b/src/option.c +index 9f63d0e..2fc90cb 100644 +--- a/src/option.c ++++ b/src/option.c +@@ -2361,6 +2361,7 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma + { + new->prefix = 64; /* default */ + new->end6 = new->start6; ++ new->flags |= CONTEXT_V6; + + /* dhcp-range=:: enables DHCP stateless on any interface */ + if (IN6_IS_ADDR_UNSPECIFIED(&new->start6)) +diff --git a/src/radv-protocol.h b/src/radv-protocol.h +index 1f0f88a..8d5b153 100644 +--- a/src/radv-protocol.h ++++ b/src/radv-protocol.h +@@ -33,6 +33,13 @@ struct ra_packet { + u32 retrans_time; + }; + ++struct neigh_packet { ++ u8 type, code; ++ u16 checksum; ++ u16 reserved; ++ struct in6_addr target; ++}; ++ + struct prefix_opt { + u8 type, len, prefix_len, flags; + u32 valid_lifetime, preferred_lifetime, reserved; +diff --git a/src/radv.c b/src/radv.c +index 72a93cb..940d6a1 100644 +--- a/src/radv.c ++++ b/src/radv.c +@@ -68,12 +68,15 @@ void ra_init(time_t now) + for (context = daemon->dhcp6; context; context = context->next) + if ((context->flags & CONTEXT_RA_NAME)) + break; ++ /* Need ICMP6 socket for transmission for DHCPv6 even when not doing RA. */ + + ICMP6_FILTER_SETBLOCKALL(&filter); +- ICMP6_FILTER_SETPASS(ND_ROUTER_SOLICIT, &filter); +- if (context) +- ICMP6_FILTER_SETPASS(ICMP6_ECHO_REPLY, &filter); +- ++ if (daemon->doing_ra) ++ { ++ ICMP6_FILTER_SETPASS(ND_ROUTER_SOLICIT, &filter); ++ if (context) ++ ICMP6_FILTER_SETPASS(ICMP6_ECHO_REPLY, &filter); ++ } + if ((fd = socket(PF_INET6, SOCK_RAW, IPPROTO_ICMPV6)) == -1 || + getsockopt(fd, IPPROTO_IPV6, IPV6_UNICAST_HOPS, &hop_limit, &len) || + #if defined(IPV6_TCLASS) && defined(IPTOS_CLASS_CS6) +@@ -88,7 +91,8 @@ void ra_init(time_t now) + + daemon->icmp6fd = fd; + +- ra_start_unsolicted(now, NULL); ++ if (daemon->doing_ra) ++ ra_start_unsolicted(now, NULL); + } + + void ra_start_unsolicted(time_t now, struct dhcp_context *context) +diff --git a/src/rfc3315.c b/src/rfc3315.c +index c8ba3d0..0408e18 100644 +--- a/src/rfc3315.c ++++ b/src/rfc3315.c +@@ -29,15 +29,20 @@ struct state { + char *iface_name; + void *packet_options, *end; + struct dhcp_netid *tags, *context_tags; ++ unsigned char mac[DHCP_CHADDR_MAX]; ++ unsigned int mac_len, mac_type; + #ifdef OPTION6_PREFIX_CLASS + struct prefix_class *send_prefix_class; + #endif + }; + +-static int dhcp6_maybe_relay(struct in6_addr *link_address, struct dhcp_netid **relay_tagsp, struct dhcp_context *context, +- int interface, char *iface_name, struct in6_addr *fallback, void *inbuff, size_t sz, int is_unicast, time_t now); ++static int dhcp6_maybe_relay(struct in6_addr *link_address, struct dhcp_netid **relay_tagsp, struct dhcp_context *context, ++ int interface, char *iface_name, struct in6_addr *fallback, void *inbuff, size_t sz, ++ struct in6_addr *client_addr, int is_unicast, time_t now, ++ unsigned char *mac, unsigned int mac_len, unsigned int mac_type); + static int dhcp6_no_relay(int msg_type, struct in6_addr *link_address, struct dhcp_netid *tags, struct dhcp_context *context, +- int interface, char *iface_name, struct in6_addr *fallback, void *inbuff, size_t sz, int is_unicast, time_t now); ++ int interface, char *iface_name, struct in6_addr *fallback, void *inbuff, size_t sz, int is_unicast, time_t now, ++ unsigned int mac_len, unsigned int mac_type, unsigned char *mac); + static void log6_opts(int nest, unsigned int xid, void *start_opts, void *end_opts); + static void log6_packet(struct state *state, char *type, struct in6_addr *addr, char *string); + +@@ -68,11 +73,14 @@ static void calculate_times(struct dhcp_context *context, unsigned int *min_time + + + unsigned short dhcp6_reply(struct dhcp_context *context, int interface, char *iface_name, +- struct in6_addr *fallback, size_t sz, int is_unicast, time_t now) ++ struct in6_addr *fallback, size_t sz, struct in6_addr *client_addr, time_t now) + { + struct dhcp_netid *relay_tags = NULL; + struct dhcp_vendor *vendor; + int msg_type; ++ unsigned int mac_len = 0; ++ unsigned int mac_type = 0; ++ unsigned char mac[DHCP_CHADDR_MAX]; + + if (sz <= 4) + return 0; +@@ -85,7 +93,10 @@ unsigned short dhcp6_reply(struct dhcp_context *context, int interface, char *if + + save_counter(0); + +- if (dhcp6_maybe_relay(NULL, &relay_tags, context, interface, iface_name, fallback, daemon->dhcp_packet.iov_base, sz, is_unicast, now)) ++ if (dhcp6_maybe_relay(NULL, &relay_tags, context, interface, iface_name, ++ fallback, daemon->dhcp_packet.iov_base, sz, client_addr, ++ IN6_IS_ADDR_MULTICAST(client_addr), now, ++ mac, mac_len, mac_type)) + return msg_type == DHCP6RELAYFORW ? DHCPV6_SERVER_PORT : DHCPV6_CLIENT_PORT; + + return 0; +@@ -93,7 +104,9 @@ unsigned short dhcp6_reply(struct dhcp_context *context, int interface, char *if + + /* This cost me blood to write, it will probably cost you blood to understand - srk. */ + static int dhcp6_maybe_relay(struct in6_addr *link_address, struct dhcp_netid **relay_tagsp, struct dhcp_context *context, +- int interface, char *iface_name, struct in6_addr *fallback, void *inbuff, size_t sz, int is_unicast, time_t now) ++ int interface, char *iface_name, struct in6_addr *fallback, void *inbuff, size_t sz, ++ struct in6_addr *client_addr, int is_unicast, time_t now, ++ unsigned char *mac, unsigned int mac_len, unsigned int mac_type) + { + void *end = inbuff + sz; + void *opts = inbuff + 34; +@@ -108,9 +121,14 @@ static int dhcp6_maybe_relay(struct in6_addr *link_address, struct dhcp_netid ** + /* if link_address != NULL if points to the link address field of the + innermost nested RELAYFORW message, which is where we find the + address of the network on which we can allocate an address. +- Recalculate the available contexts using that information. */ +- +- if (link_address) ++ Recalculate the available contexts using that information. ++ ++ link_address == NULL means there's no relay in use, so we try and find the client's ++ MAC address from the local ND cache. */ ++ ++ if (!link_address) ++ get_client_mac(client_addr, interface, mac, &mac_len, &mac_type); ++ else + { + struct dhcp_context *c; + context = NULL; +@@ -146,7 +164,8 @@ static int dhcp6_maybe_relay(struct in6_addr *link_address, struct dhcp_netid ** + return 0; + } + +- return dhcp6_no_relay(msg_type, link_address, *relay_tagsp, context, interface, iface_name, fallback, inbuff, sz, is_unicast, now); ++ return dhcp6_no_relay(msg_type, link_address, *relay_tagsp, context, interface, iface_name, fallback, inbuff, ++ sz, is_unicast, now, mac_len, mac_type, mac); + } + + /* must have at least msg_type+hopcount+link_address+peer_address+minimal size option +@@ -180,21 +199,31 @@ static int dhcp6_maybe_relay(struct in6_addr *link_address, struct dhcp_netid ** + break; + } + } +- ++ ++ /* RFC-6939 */ ++ if ((opt = opt6_find(opts, end, OPTION6_CLIENT_MAC, 3))) ++ { ++ mac_type = opt6_uint(opt, 0, 2); ++ mac_len = opt6_len(opt) - 2; ++ mac = opt6_ptr(opt, 2); ++ } ++ + for (opt = opts; opt; opt = opt6_next(opt, end)) + { + int o = new_opt6(opt6_type(opt)); + if (opt6_type(opt) == OPTION6_RELAY_MSG) + { +- struct in6_addr link_address; ++ struct in6_addr align; + /* the packet data is unaligned, copy to aligned storage */ +- memcpy(&link_address, inbuff + 2, IN6ADDRSZ); ++ memcpy(&align, inbuff + 2, IN6ADDRSZ); + /* Not, zero is_unicast since that is now known to refer to the + relayed packet, not the original sent by the client */ +- if (!dhcp6_maybe_relay(&link_address, relay_tagsp, context, interface, iface_name, fallback, opt6_ptr(opt, 0), opt6_len(opt), 0, now)) ++ if (!dhcp6_maybe_relay(&align, relay_tagsp, context, interface, iface_name, fallback, ++ opt6_ptr(opt, 0), opt6_len(opt), client_addr, 0, now, ++ mac, mac_len, mac_type)) + return 0; + } +- else ++ else if (opt6_type(opt) != OPTION6_CLIENT_MAC) + put_opt6(opt6_ptr(opt, 0), opt6_len(opt)); + end_opt6(o); + } +@@ -203,7 +232,8 @@ static int dhcp6_maybe_relay(struct in6_addr *link_address, struct dhcp_netid ** + } + + static int dhcp6_no_relay(int msg_type, struct in6_addr *link_address, struct dhcp_netid *tags, struct dhcp_context *context, +- int interface, char *iface_name, struct in6_addr *fallback, void *inbuff, size_t sz, int is_unicast, time_t now) ++ int interface, char *iface_name, struct in6_addr *fallback, void *inbuff, size_t sz, int is_unicast, time_t now, ++ unsigned int mac_len, unsigned int mac_type, unsigned char *mac) + { + void *opt; + int i, o, o1, start_opts; +@@ -214,6 +244,7 @@ static int dhcp6_no_relay(int msg_type, struct in6_addr *link_address, struct dh + unsigned char *outmsgtypep; + struct dhcp_vendor *vendor; + struct dhcp_context *context_tmp; ++ struct dhcp_mac *mac_opt; + unsigned int ignore = 0; + struct state state; + #ifdef OPTION6_PREFIX_CLASS +@@ -237,6 +268,9 @@ static int dhcp6_no_relay(int msg_type, struct in6_addr *link_address, struct dh + state.client_hostname = NULL; + state.iface_name = iface_name; + state.fqdn_flags = 0x01; /* default to send if we recieve no FQDN option */ ++ state.mac_len = mac_len; ++ state.mac_type = mac_type; ++ memcpy(state.mac, mac, mac_len); + #ifdef OPTION6_PREFIX_CLASS + state.send_prefix_class = NULL; + #endif +@@ -390,7 +424,17 @@ static int dhcp6_no_relay(int msg_type, struct in6_addr *link_address, struct dh + state.tags = opt_cfg->netid; + } + } +- ++ ++ if (mac_len != 0) ++ for (mac_opt = daemon->dhcp_macs; mac_opt; mac_opt = mac_opt->next) ++ if ((unsigned)mac_opt->hwaddr_len == mac_len && ++ ((unsigned)mac_opt->hwaddr_type == mac_type || mac_opt->hwaddr_type == 0) && ++ memcmp_masked(mac_opt->hwaddr, mac, mac_len, mac_opt->mask)) ++ { ++ mac_opt->netid.next = state.tags; ++ state.tags = &mac_opt->netid; ++ } ++ + if ((opt = opt6_find(state.packet_options, state.end, OPTION6_FQDN, 1))) + { + /* RFC4704 refers */ +@@ -433,7 +477,7 @@ static int dhcp6_no_relay(int msg_type, struct in6_addr *link_address, struct dh + + if (state.clid) + { +- config = find_config6(daemon->dhcp_conf, context, state.clid, state.clid_len, NULL); ++ config = find_config(daemon->dhcp_conf, context, state.clid, state.clid_len, mac, mac_len, mac_type, NULL); + + if (have_config(config, CONFIG_NAME)) + { +@@ -453,7 +497,7 @@ static int dhcp6_no_relay(int msg_type, struct in6_addr *link_address, struct dh + /* Search again now we have a hostname. + Only accept configs without CLID here, (it won't match) + to avoid impersonation by name. */ +- struct dhcp_config *new = find_config6(daemon->dhcp_conf, context, NULL, 0, state.hostname); ++ struct dhcp_config *new = find_config(daemon->dhcp_conf, context, NULL, 0, NULL, 0, 0, state.hostname); + if (new && !have_config(new, CONFIG_CLID) && !new->hwaddr) + config = new; + } +@@ -704,7 +748,7 @@ static int dhcp6_no_relay(int msg_type, struct in6_addr *link_address, struct dh + ltmp = NULL; + while ((ltmp = lease6_find_by_client(ltmp, state.ia_type == OPTION6_IA_NA ? LEASE_NA : LEASE_TA, state.clid, state.clid_len, state.iaid))) + { +- req_addr = (struct in6_addr *)ltmp->hwaddr; ++ req_addr = <mp->addr6; + if ((c = address6_available(context, req_addr, solicit_tags, plain_range))) + { + #ifdef OPTION6_PREFIX_CLASS +@@ -935,6 +979,9 @@ static int dhcp6_no_relay(int msg_type, struct in6_addr *link_address, struct dh + calculate_times(this_context, &min_time, &valid_time, &preferred_time, lease_time, requested_time); + + lease_set_expires(lease, valid_time, now); ++ /* Update MAC record in case it's new information. */ ++ if (mac_len != 0) ++ lease_set_hwaddr(lease, mac, state.clid, mac_len, mac_type, state.clid_len, now, 0); + if (state.ia_type == OPTION6_IA_NA && state.hostname) + { + char *addr_domain = get_domain6(req_addr); +@@ -1163,8 +1210,16 @@ static int dhcp6_no_relay(int msg_type, struct in6_addr *link_address, struct dh + log_tags(tagif, state.xid); + + if (option_bool(OPT_LOG_OPTS)) +- log6_opts(0, state.xid, daemon->outpacket.iov_base + start_opts, daemon->outpacket.iov_base + save_counter(-1)); +- ++ { ++ if (mac_len != 0) ++ { ++ print_mac(daemon->dhcp_buff, mac, mac_len); ++ my_syslog(MS_DHCP | LOG_INFO, _("%u client MAC address: %s"), state.xid, daemon->dhcp_buff); ++ } ++ ++ log6_opts(0, state.xid, daemon->outpacket.iov_base + start_opts, daemon->outpacket.iov_base + save_counter(-1)); ++ } ++ + return 1; + + } +@@ -1548,7 +1603,7 @@ static int check_address(struct state *state, struct in6_addr *addr) + + if (lease->clid_len != state->clid_len || + memcmp(lease->clid, state->clid, state->clid_len) != 0 || +- lease->hwaddr_type != state->iaid) ++ lease->iaid != state->iaid) + return 0; + + return 1; +@@ -1591,7 +1646,8 @@ static void update_leases(struct state *state, struct dhcp_context *context, str + if (lease) + { + lease_set_expires(lease, lease_time, now); +- lease_set_hwaddr(lease, NULL, state->clid, 0, state->iaid, state->clid_len, now, 0); ++ lease_set_iaid(lease, state->iaid); ++ lease_set_hwaddr(lease, state->mac, state->clid, state->mac_len, state->mac_type, state->clid_len, now, 0); + lease_set_interface(lease, state->interface, now); + if (state->hostname && state->ia_type == OPTION6_IA_NA) + { +-- +2.1.0 + diff --git a/SPECS/dnsmasq.spec b/SPECS/dnsmasq.spec index c4650d2..5ab2b21 100644 --- a/SPECS/dnsmasq.spec +++ b/SPECS/dnsmasq.spec @@ -13,7 +13,7 @@ Name: dnsmasq Version: 2.66 -Release: 12%{?extraversion}%{?dist} +Release: 13%{?extraversion}%{?dist} Summary: A lightweight DHCP/caching DNS server Group: System Environment/Daemons @@ -63,6 +63,8 @@ Patch17: %{name}-2.66-Dont-BIND-DHCP-socket-if-more-interfaces-may-come.p Patch18: %{name}-2.66-Fix_crash_with_empty_DHCP_string_options.patch # commit ffbad34b310ab2db6a686c85f5c0a0e52c0680c8 Patch19: %{name}-2.66-Set-SOREUSEADDR-as-well-as-SOREUSEPORT-on-DHCP-socke.patch +# https://bugzilla.redhat.com/show_bug.cgi?id=1179756 +Patch20: %{name}-2.66-Support-IPv6-assignment-based-on-MAC-for-DHCPv6.patch BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n) @@ -119,6 +121,7 @@ query/remove a DHCP server's leases. %patch17 -p1 -b .bindtodevice %patch18 -p1 -b .empty_dhcp_opts %patch19 -p1 -b .reuseport +%patch20 -p1 # use /var/lib/dnsmasq instead of /var/lib/misc for file in dnsmasq.conf.example man/dnsmasq.8 man/es/dnsmasq.8 src/config.h; do @@ -199,6 +202,10 @@ rm -rf $RPM_BUILD_ROOT %{_mandir}/man1/dhcp_* %changelog +* Wed Feb 25 2015 Pavel Šimerda - 2.66-13 +- Resolves: #1179756 - dnsmasq does not support MAC address based matching for + IPv6 + * Fri Jan 24 2014 Daniel Mach - 2.66-12 - Mass rebuild 2014-01-24