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From 3d113137fd64cd0723cbecab6a36a75d3ecfb0a6 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Harald=20Jens=C3=A5s?= <hjensas@redhat.com>
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Date: Thu, 7 May 2020 00:33:54 +0200
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Subject: [PATCH 1/1] Fix regression in s_config_in_context() method
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Prior to commit 137286e9baecf6a3ba97722ef1b49c851b531810
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a config would not be considered in context if:
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a) it has no address family flags set
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b) it has the address family flag of current context set
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Since above commit config is considered in context if the
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address family is the opposite of current context.
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The result is that a config with two dhcp-host records,
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one for IPv6 and another for IPv4 no longer works, for
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example with the below config the config with the IPv6
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address would be considered in context for a DHCP(v4)
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request.
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dhcp-host=52:54:00:bc:c3:fd,172.20.0.11,host2
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dhcp-host=52:54:00:bc:c3:fd,[fd12:3456:789a:1::aadd],host2
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This commit restores the previous behavior.
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---
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src/dhcp-common.c | 10 +++++++---
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1 file changed, 7 insertions(+), 3 deletions(-)
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diff --git a/src/dhcp-common.c b/src/dhcp-common.c
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index eae9886..ffc78ca 100644
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--- a/src/dhcp-common.c
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+++ b/src/dhcp-common.c
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@@ -280,14 +280,18 @@ static int is_config_in_context(struct dhcp_context *context, struct dhcp_config
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{
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if (!context) /* called via find_config() from lease_update_from_configs() */
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return 1;
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-
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+
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+ /* No address present in config == in context */
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+ if (!(config->flags & (CONFIG_ADDR | CONFIG_ADDR6)))
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+ return 1;
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+
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#ifdef HAVE_DHCP6
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if (context->flags & CONTEXT_V6)
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{
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struct addrlist *addr_list;
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if (!(config->flags & CONFIG_ADDR6))
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- return 1;
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+ return 0;
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for (; context; context = context->current)
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for (addr_list = config->addr6; addr_list; addr_list = addr_list->next)
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@@ -303,7 +307,7 @@ static int is_config_in_context(struct dhcp_context *context, struct dhcp_config
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#endif
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{
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if (!(config->flags & CONFIG_ADDR))
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- return 1;
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+ return 0;
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for (; context; context = context->current)
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if ((config->flags & CONFIG_ADDR) && is_same_net(config->addr, context->start, context->netmask))
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--
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2.25.4
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