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ipv6: Check dest prefix length on original route not copied one in rt6_alloc_cow().

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[ Upstream commit bb3c36863e ]

After commit 8e2ec63917 ("ipv6: don't
use inetpeer to store metrics for routes.") the test in rt6_alloc_cow()
for setting the ANYCAST flag is now wrong.

'rt' will always now have a plen of 128, because it is set explicitly
to 128 by ip6_rt_copy.

So to restore the semantics of the test, check the destination prefix
length of 'ort'.

Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
David S. Miller
2011-12-13 17:35:06 -05:00
committed by Greg Kroah-Hartman
parent 4e1a937bf1
commit ea67f1fb59
1 changed files with 1 additions and 1 deletions
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2
net/ipv6/route.c
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@@ -725,7 +725,7 @@ static struct rt6_info *rt6_alloc_cow(const struct rt6_info *ort,
int attempts = !in_softirq();
if (!(rt->rt6i_flags&RTF_GATEWAY)) {
if (rt->rt6i_dst.plen != 128 &&
if (ort->rt6i_dst.plen != 128 &&
ipv6_addr_equal(&ort->rt6i_dst.addr, daddr))
rt->rt6i_flags |= RTF_ANYCAST;
ipv6_addr_copy(&rt->rt6i_gateway, daddr);