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ipv6: Nonlocal bind

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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>
This commit is contained in:
Tom Herbert
2015-07-08 16:58:22 -07:00
committed by David S. Miller
parent 5a10ececc6
commit 35a256fee5
6 changed files with 20 additions and 3 deletions
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1
include/net/netns/ipv6.h
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@@ -31,6 +31,7 @@ struct netns_sysctl_ipv6 {
int auto_flowlabels;
int icmpv6_time;
int anycast_src_echo_reply;
int ip_nonlocal_bind;
int fwmark_reflect;
int idgen_retries;
int idgen_delay;