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-rw-r--r--sys/netinet6/in6.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/netinet6/in6.c b/sys/netinet6/in6.c
index d5bd36c..801472a 100644
--- a/sys/netinet6/in6.c
+++ b/sys/netinet6/in6.c
@@ -1830,7 +1830,8 @@ in6_are_prefix_equal(p1, p2, len)
if (bcmp(&p1->s6_addr, &p2->s6_addr, bytelen))
return (0);
- if (p1->s6_addr[bytelen] >> (8 - bitlen) !=
+ if (bitlen != 0 &&
+ p1->s6_addr[bytelen] >> (8 - bitlen) !=
p2->s6_addr[bytelen] >> (8 - bitlen))
return (0);
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