From 35a256fee52c7c207796302681fa95189c85b408 Mon Sep 17 00:00:00 2001 From: Tom Herbert Date: Wed, 8 Jul 2015 16:58:22 -0700 Subject: 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 Signed-off-by: David S. Miller --- net/ipv6/sysctl_net_ipv6.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'net/ipv6/sysctl_net_ipv6.c') diff --git a/net/ipv6/sysctl_net_ipv6.c b/net/ipv6/sysctl_net_ipv6.c index 4e705add4f18..db48aebd9c47 100644 --- a/net/ipv6/sysctl_net_ipv6.c +++ b/net/ipv6/sysctl_net_ipv6.c @@ -75,6 +75,13 @@ static struct ctl_table ipv6_table_template[] = { .mode = 0644, .proc_handler = proc_dointvec }, + { + .procname = "ip_nonlocal_bind", + .data = &init_net.ipv6.sysctl.ip_nonlocal_bind, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = proc_dointvec + }, { } }; @@ -117,6 +124,7 @@ static int __net_init ipv6_sysctl_net_init(struct net *net) ipv6_table[5].data = &net->ipv6.sysctl.idgen_retries; ipv6_table[6].data = &net->ipv6.sysctl.idgen_delay; ipv6_table[7].data = &net->ipv6.sysctl.flowlabel_state_ranges; + ipv6_table[8].data = &net->ipv6.sysctl.ip_nonlocal_bind; ipv6_route_table = ipv6_route_sysctl_init(net); if (!ipv6_route_table) -- cgit v1.2.3