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Diffstat (limited to 'bgpd/bgp_attr.c')
-rw-r--r--bgpd/bgp_attr.c17
1 files changed, 13 insertions, 4 deletions
diff --git a/bgpd/bgp_attr.c b/bgpd/bgp_attr.c
index b013c23f..1c13d11c 100644
--- a/bgpd/bgp_attr.c
+++ b/bgpd/bgp_attr.c
@@ -867,7 +867,7 @@ bgp_attr_aspath (struct peer *peer, bgp_size_t length,
total = length + (CHECK_FLAG (flag, BGP_ATTR_FLAG_EXTLEN) ? 4 : 3);
- /* Flag check. */
+ /* Flags check. */
if (CHECK_FLAG (flag, BGP_ATTR_FLAG_PARTIAL))
{
zlog (peer->log, LOG_ERR,
@@ -877,11 +877,20 @@ bgp_attr_aspath (struct peer *peer, bgp_size_t length,
startp, total);
}
- if (CHECK_FLAG (flag, BGP_ATTR_FLAG_OPTIONAL)
- || ! CHECK_FLAG (flag, BGP_ATTR_FLAG_TRANS))
+ if (!CHECK_FLAG (flag, BGP_ATTR_FLAG_TRANS))
+ {
+ zlog (peer->log, LOG_ERR,
+ "AS_PATH attribute must be flagged as \"transitive\" (%u)", flag);
+ return bgp_attr_malformed (peer, BGP_ATTR_AS_PATH, flag,
+ BGP_NOTIFY_UPDATE_ATTR_FLAG_ERR,
+ startp, total);
+ }
+
+ if (CHECK_FLAG (flag, BGP_ATTR_FLAG_OPTIONAL))
{
zlog (peer->log, LOG_ERR,
- "As-Path attribute flag isn't transitive %d", flag);
+ "AS_PATH attribute must not be flagged as \"optional\" (%u)", flag);
+
return bgp_attr_malformed (peer, BGP_ATTR_AS_PATH, flag,
BGP_NOTIFY_UPDATE_ATTR_FLAG_ERR,
startp, total);