diff options
Diffstat (limited to 'sys/netinet6/scope6.c')
| -rw-r--r-- | sys/netinet6/scope6.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/sys/netinet6/scope6.c b/sys/netinet6/scope6.c index 0987ea7e99ad..08702a2e81ab 100644 --- a/sys/netinet6/scope6.c +++ b/sys/netinet6/scope6.c @@ -505,8 +505,23 @@ in6_set_unicast_scopeid(struct in6_addr *in6, uint32_t scopeid) struct ifnet* in6_getlinkifnet(uint32_t zoneid) { + struct ifnet *ifp; - return (ifnet_byindex((u_short)zoneid)); + ifp = ifnet_byindex((u_short)zoneid); + + if (ifp == NULL) + return (NULL); + + /* An interface might not be IPv6 capable. */ + if (ifp->if_afdata[AF_INET6] == NULL) { + log(LOG_NOTICE, + "%s: embedded scope points to an interface without " + "IPv6: %s%%%d.\n", __func__, + if_name(ifp), zoneid); + return (NULL); + } + + return (ifp); } /* |