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authorTom Herbert <tom@herbertland.com>2015-07-08 16:58:22 -0700
committerDavid S. Miller <davem@davemloft.net>2015-07-09 21:09:10 -0700
commit35a256fee52c7c207796302681fa95189c85b408 (patch)
treec6f4e37117bfe3423b095e55073d9c2ed337c176 /net/ipv6/af_inet6.c
parent5a10ececc60c469d0641531589ccc38a768e0d07 (diff)
ipv6: Nonlocal bind
Add support to allow non-local binds similar to how this was done for IPv4. Non-local binds are very useful in emulating the Internet in a box, etc. This add the ip_nonlocal_bind sysctl under ipv6. Testing: Set up nonlocal binding and receive routing on a host, e.g.: ip -6 rule add from ::/0 iif eth0 lookup 200 ip -6 route add local 2001:0:0:1::/64 dev lo proto kernel scope host table 200 sysctl -w net.ipv6.ip_nonlocal_bind=1 Set up routing to 2001:0:0:1::/64 on peer to go to first host ping6 -I 2001:0:0:1::1 peer-address -- to verify Signed-off-by: Tom Herbert <tom@herbertland.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/af_inet6.c')
-rw-r--r--net/ipv6/af_inet6.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index 39e670a91596..7bc92ea4ae8f 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -342,7 +342,8 @@ int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
*/
v4addr = LOOPBACK4_IPV6;
if (!(addr_type & IPV6_ADDR_MULTICAST)) {
- if (!(inet->freebind || inet->transparent) &&
+ if (!net->ipv6.sysctl.ip_nonlocal_bind &&
+ !(inet->freebind || inet->transparent) &&
!ipv6_chk_addr(net, &addr->sin6_addr,
dev, 0)) {
err = -EADDRNOTAVAIL;