common/ipaddr: Do not select link-local IPv6 addresses

They are not suited to be used with Ceph and should not be selected as a address to bind on. Fixes: http://tracker.ceph.com/issues/21813 Signed-off-by: Wido den Hollander <[email protected]>
jcsp · Mar 13, 2018 · 9a11066 · 9a11066
1 parent 6432786
commit 9a11066
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/src/common/ipaddr.cc b/src/common/ipaddr.cc
@@ -89,6 +89,9 @@ const struct ifaddrs *find_ipv6_in_subnet(const struct ifaddrs *addrs,
     if (addrs->ifa_addr->sa_family != net->sin6_family)
       continue;
 
+    if (IN6_IS_ADDR_LINKLOCAL(addrs->ifa_addr))
+      continue;
+
     struct in6_addr *cur = &((struct sockaddr_in6*)addrs->ifa_addr)->sin6_addr;
     netmask_ipv6(cur, prefix_len, &temp);