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authorHannes Frederic Sowa <hannes@stressinduktion.org>2014-01-06 17:53:14 +0100
committerDavid S. Miller <davem@davemloft.net>2014-01-06 16:32:43 -0500
commit88ad31491e21f5dec347911d9804c673af414a09 (patch)
tree65f99276eb6fb39680a995ae4d68f5b4f3755ad8 /net/ipv6
parente5e97ee956d8c5ed2fc5877d29dee17a6a59de8e (diff)
downloadlinux-stericsson-88ad31491e21f5dec347911d9804c673af414a09.tar.gz
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: Fran├žois-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')
-rw-r--r--net/ipv6/addrconf.c4
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))