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ip6_tunnel: allow routing IPv4 traffic in NBMA mode

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Since IPv4 routes support IPv6 gateways now, we can route IPv4 traffic in
NBMA tunnels.

Signed-off-by: Qing Deng <i@moy.cat>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Qing Deng 2022-01-23 14:00:00 +08:00 committed by David S. Miller
parent 53243d412e
commit c1f55c5e04
1 changed files with 5 additions and 0 deletions
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5
net/ipv6/ip6_tunnel.c
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@ -1121,6 +1121,11 @@ int ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev, __u8 dsfield,
memcpy(&fl6->daddr, addr6, sizeof(fl6->daddr));
neigh_release(neigh);
} else if (skb->protocol == htons(ETH_P_IP)) {
struct rtable *rt = skb_rtable(skb);
if (rt->rt_gw_family == AF_INET6)
memcpy(&fl6->daddr, &rt->rt_gw6, sizeof(fl6->daddr));
}
} else if (t->parms.proto != 0 && !(t->parms.flags &
(IP6_TNL_F_USE_ORIG_TCLASS |