diff options
| -rw-r--r-- | zebra/zebra_nhg.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/zebra/zebra_nhg.c b/zebra/zebra_nhg.c index ba204bda61..f06ff44f20 100644 --- a/zebra/zebra_nhg.c +++ b/zebra/zebra_nhg.c @@ -1354,6 +1354,17 @@ static int nexthop_active(afi_t afi, struct route_entry *re, } } + if ((top->p.family == AF_INET && top->p.prefixlen == 32 + && nexthop->gate.ipv4.s_addr == top->p.u.prefix4.s_addr) + || (top->p.family == AF_INET6 && top->p.prefixlen == 128 + && memcmp(&nexthop->gate.ipv6, &top->p.u.prefix6, 16) == 0)) { + if (IS_ZEBRA_DEBUG_RIB_DETAILED) + zlog_debug( + "\t:%s: Attempting to install a max prefixlength route through itself", + __PRETTY_FUNCTION__); + return 0; + } + /* Make lookup prefix. */ memset(&p, 0, sizeof(struct prefix)); switch (afi) { |