diff options
| author | Bjørn Mork <bjorn@mork.no> | 2011-07-05 23:04:13 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-07-07 04:15:10 -0700 |
| commit | 2bda8a0c8af5294b869da1efd2c2b9a562f50dcf (patch) | |
| tree | 730583db2a4266ab31507678377c458d087903c6 /net/ipv6/addrconf.c | |
| parent | fa366124ef3aab35e378ae141f379c133d839943 (diff) | |
Disable router anycast address for /127 prefixes
RFC 6164 requires that routers MUST disable Subnet-Router anycast
for the prefix when /127 prefixes are used.
No need for matching code in addrconf_leave_anycast() as it
will silently ignore any attempt to leave an unknown anycast
address.
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/addrconf.c')
| -rw-r--r-- | net/ipv6/addrconf.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 05838c7fcf6..fc6d3772366 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -1470,6 +1470,8 @@ void addrconf_leave_solict(struct inet6_dev *idev, const struct in6_addr *addr) static void addrconf_join_anycast(struct inet6_ifaddr *ifp) { struct in6_addr addr; + if (ifp->prefix_len == 127) /* RFC 6164 */ + return; ipv6_addr_prefix(&addr, &ifp->addr, ifp->prefix_len); if (ipv6_addr_any(&addr)) return; |