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Commit b4f67f09 authored by Nicolas Dichtel's avatar Nicolas Dichtel Committed by Greg Kroah-Hartman
Browse files

ipv6: take care of scope when choosing the src addr 



commit abb9a68d2c64dd9b128ae1f2e635e4d805e7ce64 upstream.

When the source address is selected, the scope must be checked. For
example, if a loopback address is assigned to the vrf device, it must not
be chosen for packets sent outside.

CC: stable@vger.kernel.org
Fixes: afbac601 ("net: ipv6: Address selection needs to consider L3 domains")
Signed-off-by: default avatarNicolas Dichtel <nicolas.dichtel@6wind.com>
Reviewed-by: default avatarDavid Ahern <dsahern@kernel.org>
Link: https://patch.msgid.link/20240710081521.3809742-4-nicolas.dichtel@6wind.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 3dfd84aa

net/ipv6/addrconf.c

+2 −1
Original line number Diff line number Diff line
@@ -1768,7 +1768,8 @@ int ipv6_dev_get_saddr(struct net *net, const struct net_device *dst_dev, 
							    master, &dst,

							    scores, hiscore_idx);



			if (scores[hiscore_idx].ifa)

			if (scores[hiscore_idx].ifa &&

			    scores[hiscore_idx].scopedist >= 0)

				goto out;

		}