path: root/net/ipv6/addrconf.c
diff options
authorRobert Shearman <rshearma@vyatta.att-mail.com>2018-09-19 13:56:53 +0100
committerDavid S. Miller <davem@davemloft.net>2018-09-19 21:23:01 -0700
commit3ede0bbcdfc94ccdbe56bed4e66beb3f4f4f6b00 (patch)
treee69ccbacf5b23bbe283999f823fbbd344857ac45 /net/ipv6/addrconf.c
parentMerge branch 'hns3-fixes' (diff)
ipv6: Allow the l3mdev to be a loopback
There is no way currently for an IPv6 client connect using a loopback address in a VRF, whereas for IPv4 the loopback address can be added: $ sudo ip addr add dev vrfred $ sudo ip -6 addr add ::1/128 dev vrfred RTNETLINK answers: Cannot assign requested address So allow ::1 to be configured on an L3 master device. In order for this to be usable ip_route_output_flags needs to not consider ::1 to be a link scope address (since oif == l3mdev and so it would be dropped), and ipv6_rcv needs to consider the l3mdev to be a loopback device so that it doesn't drop the packets. Signed-off-by: Robert Shearman <rshearma@vyatta.att-mail.com> Signed-off-by: Mike Manning <mmanning@vyatta.att-mail.com> Reviewed-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
1 files changed, 1 insertions, 0 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index d4733160e6b7..bfe3ec7ecb14 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -997,6 +997,7 @@ ipv6_add_addr(struct inet6_dev *idev, struct ifa6_config *cfg,
if (addr_type == IPV6_ADDR_ANY ||
addr_type & IPV6_ADDR_MULTICAST ||
(!(idev->dev->flags & IFF_LOOPBACK) &&
+ !netif_is_l3_master(idev->dev) &&
addr_type & IPV6_ADDR_LOOPBACK))