diff options
Diffstat (limited to 'src/vnet/ip/ip4_options.c')
| -rw-r--r-- | src/vnet/ip/ip4_options.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/vnet/ip/ip4_options.c b/src/vnet/ip/ip4_options.c index 9b01151a1f0..6ef6b6030cc 100644 --- a/src/vnet/ip/ip4_options.c +++ b/src/vnet/ip/ip4_options.c @@ -78,6 +78,11 @@ VLIB_NODE_FN (ip4_options_node) (vlib_main_t * vm, { case IP4_ROUTER_ALERT_OPTION: /* + * check the option length + */ + if (options[1] != 4) + break; + /* * if it's an IGMP packet, pass up the local stack */ if (IP_PROTOCOL_IGMP == ip4->protocol) |