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diff -up net-tools-2.0/man/en_US/netstat.8.interface net-tools-2.0/man/en_US/netstat.8
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--- net-tools-2.0/man/en_US/netstat.8.interface 2012-10-04 11:31:00.753513633 +0200
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+++ net-tools-2.0/man/en_US/netstat.8 2012-10-04 11:31:00.755513607 +0200
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@@ -46,9 +46,9 @@ netstat \- Print network connections, ro
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.RB [delay]
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.P
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.B netstat
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-.RB { \-\-interfaces | \-i }
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+.RB { \-\-interfaces | \-I | \-i }
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.RB [ \-\-all | \-a ]
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-.RB [ \-\-extend | \-e [ \-\-extend | \-e] ]
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+.RB [ \-\-extend | \-e ]
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.RB [ \-\-verbose | \-v ]
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.RB [ \-\-program | \-p ]
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.RB [ \-\-numeric | \-n ]
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@@ -129,8 +129,8 @@ and
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produce the same output.
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.SS "\-\-groups , \-g"
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Display multicast group membership information for IPv4 and IPv6.
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-.SS "\-\-interfaces, \-i"
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-Display a table of all network interfaces.
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+.SS "\-\-interfaces=\fIiface \fR, \fB\-I=\fIiface \fR, \fB\-i"
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+Display a table of all network interfaces, or the specified \fIiface\fR.
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.SS "\-\-masquerade , \-M"
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Display a list of masqueraded connections.
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.SS "\-\-statistics , \-s"
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diff -up net-tools-2.0/netstat.c.interface net-tools-2.0/netstat.c
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--- net-tools-2.0/netstat.c.interface 2012-10-04 11:31:00.745513734 +0200
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+++ net-tools-2.0/netstat.c 2012-10-04 11:31:00.756513594 +0200
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@@ -143,6 +143,7 @@ char *Release = RELEASE, *Version = "net
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#define E_IOCTL -3
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int flag_int = 0;
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+char *flag_int_name = NULL;
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int flag_rou = 0;
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int flag_mas = 0;
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int flag_sta = 0;
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@@ -1786,6 +1787,7 @@ static int rfcomm_info(void)
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static int iface_info(void)
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{
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static int count=0;
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+ struct interface *ife = NULL;
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if (skfd < 0) {
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if ((skfd = sockets_open(0)) < 0) {
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@@ -1800,7 +1802,11 @@ static int iface_info(void)
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printf(_("Iface MTU RX-OK RX-ERR RX-DRP RX-OVR TX-OK TX-ERR TX-DRP TX-OVR Flg\n"));
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}
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- if (for_all_interfaces(do_if_print, &flag_all) < 0) {
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+ if (flag_int_name) {
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+ ife = lookup_interface(flag_int_name);
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+ do_if_print(ife, &flag_all);
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+ }
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+ else if (for_all_interfaces(do_if_print, &flag_all) < 0) {
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perror(_("missing interface information"));
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exit(1);
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}
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@@ -1826,9 +1832,10 @@ static void usage(void)
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{
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fprintf(stderr, _("usage: netstat [-vWeenNcCF] [<Af>] -r netstat {-V|--version|-h|--help}\n"));
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fprintf(stderr, _(" netstat [-vWnNcaeol] [<Socket> ...]\n"));
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- fprintf(stderr, _(" netstat { [-vWeenNac] -i | [-cnNe] -M | -s [-6tuw] } [delay]\n\n"));
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+ fprintf(stderr, _(" netstat { [-vWeenNac] -I[<Iface>] | [-veenNac] -i | [-cnNe] -M | -s [-6tuw] } [delay]\n\n"));
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fprintf(stderr, _(" -r, --route display routing table\n"));
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+ fprintf(stderr, _(" -I, --interfaces=<Iface> display interface table for <Iface>\n"));
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fprintf(stderr, _(" -i, --interfaces display interface table\n"));
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fprintf(stderr, _(" -g, --groups display multicast group memberships\n"));
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fprintf(stderr, _(" -s, --statistics display networking statistics (like SNMP)\n"));
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@@ -1873,7 +1880,7 @@ int main
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{
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AFTRANS_OPTS,
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{"version", 0, 0, 'V'},
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- {"interfaces", 0, 0, 'i'},
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+ {"interfaces", 2, 0, 'I'},
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{"help", 0, 0, 'h'},
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{"route", 0, 0, 'r'},
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#if HAVE_FW_MASQUERADE
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@@ -1917,7 +1924,7 @@ int main
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getroute_init(); /* Set up AF routing support */
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afname[0] = '\0';
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- while ((i = getopt_long(argc, argv, "A:CFMacdeghilnNoprsStuUvVWwx64?Z", longopts, &lop)) != EOF)
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+ while ((i = getopt_long(argc, argv, "A:CFMacdeghiI::lnNoprsStuUvVWwx64?Z", longopts, &lop)) != EOF)
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switch (i) {
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case -1:
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break;
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@@ -1958,6 +1965,13 @@ int main
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case 'p':
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flag_prg++;
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break;
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+ case 'I':
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+ if (optarg && strcmp(optarg, "(null)"))
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+ if (optarg[0] == '=') optarg++;
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+ if (optarg && strcmp(optarg, "(null)"))
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+ flag_int_name = strdup(optarg);
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+ flag_int++;
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+ break;
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case 'i':
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flag_int++;
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break;
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