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net: ipv6: check route protocol when deleting routes

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The protocol field is checked when deleting IPv4 routes, but ignored for
IPv6, which causes problems with routing daemons accidentally deleting
externally set routes (observed by multiple bird6 users).

This can be verified using `ip -6 route del <prefix> proto something`.

Signed-off-by: Mantas Mikulėnas <grawity@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Mantas M 2016-12-16 10:30:59 +02:00 • committed by David S. Miller
parent c762eaa777
commit c2ed1880fd
1 changed files with 2 additions and 0 deletions
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2
net/ipv6/route.c
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@ -2174,6 +2174,8 @@ static int ip6_route_del(struct fib6_config *cfg)
continue;
if (cfg->fc_metric && cfg->fc_metric != rt->rt6i_metric)
continue;
if (cfg->fc_protocol && cfg->fc_protocol != rt->rt6i_protocol)
continue;
dst_hold(&rt->dst);
read_unlock_bh(&table->tb6_lock);