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ipv6: Default fib6_type to RTN_UNICAST when not set

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[ Upstream commit c7036d97ac ]

A user reported that routes are getting installed with type 0 (RTN_UNSPEC)
where before the routes were RTN_UNICAST. One example is from accel-ppp
which apparently still uses the ioctl interface and does not set
rtmsg_type. Another is the netlink interface where ipv6 does not require
rtm_type to be set (v4 does). Prior to the commit in the Fixes tag the
ipv6 stack converted type 0 to RTN_UNICAST, so restore that behavior.

Fixes: e8478e80e5 ("net/ipv6: Save route type in rt6_info")
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
David Ahern 2019-06-19 10:50:24 -07:00 committed by Greg Kroah-Hartman
parent 02127bdfee
commit ff129837a5
1 changed files with 1 additions and 1 deletions
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net/ipv6/route.c
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@ -3109,7 +3109,7 @@ static struct fib6_info *ip6_route_info_create(struct fib6_config *cfg,
rt->fib6_metric = cfg->fc_metric;
rt->fib6_nh.nh_weight = 1;
rt->fib6_type = cfg->fc_type;
rt->fib6_type = cfg->fc_type ? : RTN_UNICAST;
/* We cannot add true routes via loopback here,
they would result in kernel looping; promote them to reject routes