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-rw-r--r--isisd/isis_tlvs.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/isisd/isis_tlvs.c b/isisd/isis_tlvs.c
index 2a486c754..17dbb1903 100644
--- a/isisd/isis_tlvs.c
+++ b/isisd/isis_tlvs.c
@@ -2057,7 +2057,7 @@ static int unpack_item_extended_ip_reach(uint16_t mtid, uint8_t len,
rv->down = (control & ISIS_EXTENDED_IP_REACH_DOWN);
rv->prefix.family = AF_INET;
rv->prefix.prefixlen = control & 0x3f;
- if (rv->prefix.prefixlen > 32) {
+ if (rv->prefix.prefixlen > IPV4_MAX_BITLEN) {
sbuf_push(log, indent, "Prefixlen %u is implausible for IPv4\n",
rv->prefix.prefixlen);
goto out;