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-rw-r--r--bgpd/bgp_aspath.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/bgpd/bgp_aspath.c b/bgpd/bgp_aspath.c
index e65541f9..440815b4 100644
--- a/bgpd/bgp_aspath.c
+++ b/bgpd/bgp_aspath.c
@@ -1208,6 +1208,10 @@ aspath_prepend (struct aspath *as1, struct aspath *as2)
while (seg1 && seg1->next)
seg1 = seg1->next;
+ /* Delete any AS_CONFED_SEQUENCE segment from as2. */
+ if (seg1->type == AS_SEQUENCE && seg2->type == AS_CONFED_SEQUENCE)
+ as2 = aspath_delete_confed_seq (as2);
+
/* Compare last segment type of as1 and first segment type of as2. */
if (seg1->type != seg2->type)
return aspath_merge (as1, as2);