Commit 2bda8a0c authored Jul 05, 2011 by Bjørn Mork Committed by David S. Miller Jul 07, 2011

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>

parent fa366124

net/ipv6/addrconf.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -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;