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path: root/zebra/kernel_socket.c
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Diffstat (limited to 'zebra/kernel_socket.c')
-rw-r--r--zebra/kernel_socket.c25
1 files changed, 22 insertions, 3 deletions
diff --git a/zebra/kernel_socket.c b/zebra/kernel_socket.c
index fe7411ee..f391d53a 100644
--- a/zebra/kernel_socket.c
+++ b/zebra/kernel_socket.c
@@ -623,8 +623,17 @@ rtm_read (struct rt_msghdr *rtm)
p.prefixlen = IPV4_MAX_PREFIXLEN;
else
p.prefixlen = ip_masklen (mask.sin.sin_addr);
-
- if (rtm->rtm_type == RTM_GET || rtm->rtm_type == RTM_ADD)
+
+ /* Change, delete the old prefix, we have no further information
+ * to specify the route really
+ */
+ if (rtm->rtm_type == RTM_CHANGE)
+ rib_delete_ipv4 (ZEBRA_ROUTE_KERNEL, zebra_flags, &p,
+ NULL, 0, 0);
+
+ if (rtm->rtm_type == RTM_GET
+ || rtm->rtm_type == RTM_ADD
+ || rtm->rtm_type == RTM_CHANGE)
rib_add_ipv4 (ZEBRA_ROUTE_KERNEL, zebra_flags,
&p, &gate.sin.sin_addr, 0, 0, 0, 0);
else
@@ -652,7 +661,16 @@ rtm_read (struct rt_msghdr *rtm)
}
#endif /* KAME */
- if (rtm->rtm_type == RTM_GET || rtm->rtm_type == RTM_ADD)
+ /* CHANGE: delete the old prefix, we have no further information
+ * to specify the route really
+ */
+ if (rtm->rtm_type == RTM_CHANGE)
+ rib_delete_ipv4 (ZEBRA_ROUTE_KERNEL, zebra_flags, &p,
+ NULL, 0, 0);
+
+ if (rtm->rtm_type == RTM_GET
+ || rtm->rtm_type == RTM_ADD
+ || rtm->rtm_type == RTM_CHANGE)
rib_add_ipv6 (ZEBRA_ROUTE_KERNEL, zebra_flags,
&p, &gate.sin6.sin6_addr, ifindex, 0, 0, 0);
else
@@ -920,6 +938,7 @@ kernel_read (struct thread *thread)
{
case RTM_ADD:
case RTM_DELETE:
+ case RTM_CHANGE:
rtm_read (rtm);
break;
case RTM_IFINFO: