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| author | Hannes Frederic Sowa <hannes@stressinduktion.org> | 2014-01-06 17:53:14 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-01-06 16:32:43 -0500 |
| commit | 88ad31491e21f5dec347911d9804c673af414a09 (patch) | |
| tree | 65f99276eb6fb39680a995ae4d68f5b4f3755ad8 /net/ipv6/addrconf.c | |
| parent | e5e97ee956d8c5ed2fc5877d29dee17a6a59de8e (diff) | |
| download | linux-88ad31491e21f5dec347911d9804c673af414a09.tar.gz linux-88ad31491e21f5dec347911d9804c673af414a09.tar.bz2 linux-88ad31491e21f5dec347911d9804c673af414a09.zip | |
ipv6: don't install anycast address for /128 addresses on routers
It does not make sense to create an anycast address for an /128-prefix.
Suppress it.
As 32019e651c6fce ("ipv6: Do not leave router anycast address for /127
prefixes.") shows we also may not leave them, because we could accidentally
remove an anycast address the user has allocated or got added via another
prefix.
Cc: François-Xavier Le Bail <fx.lebail@yahoo.com>
Cc: Thomas Haller <thaller@redhat.com>
Cc: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/addrconf.c')
| -rw-r--r-- | net/ipv6/addrconf.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 1a341f74aa3f..f62c72b59f8e 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -1671,7 +1671,7 @@ 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 */ + if (ifp->prefix_len >= 127) /* RFC 6164 */ return; ipv6_addr_prefix(&addr, &ifp->addr, ifp->prefix_len); if (ipv6_addr_any(&addr)) @@ -1682,7 +1682,7 @@ static void addrconf_join_anycast(struct inet6_ifaddr *ifp) static void addrconf_leave_anycast(struct inet6_ifaddr *ifp) { struct in6_addr addr; - if (ifp->prefix_len == 127) /* RFC 6164 */ + if (ifp->prefix_len >= 127) /* RFC 6164 */ return; ipv6_addr_prefix(&addr, &ifp->addr, ifp->prefix_len); if (ipv6_addr_any(&addr)) |