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| author |   Tom Herbert <tom@herbertland.com> | 2015-07-08 16:58:22 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2015-07-09 21:09:10 -0700 |
| commit | 35a256fee52c7c207796302681fa95189c85b408 (patch) | |
| tree | c6f4e37117bfe3423b095e55073d9c2ed337c176 /net/ipv4/ping.c | |
| parent | Merge branch 'tw_cleanups' (diff) | |
| download | linux-dev-35a256fee52c7c207796302681fa95189c85b408.tar.xz linux-dev-35a256fee52c7c207796302681fa95189c85b408.zip | |
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/ipv4/ping.c')
| -rw-r--r-- | net/ipv4/ping.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/ipv4/ping.c b/net/ipv4/ping.c index 05ff44b758df..e89094ab5ddb 100644 --- a/net/ipv4/ping.c +++ b/net/ipv4/ping.c @@ -363,7 +363,8 @@ static int ping_check_bind_addr(struct sock *sk, struct inet_sock *isk, scoped); rcu_read_unlock(); - if (!(isk->freebind || isk->transparent || has_addr || + if (!(net->ipv6.sysctl.ip_nonlocal_bind || + isk->freebind || isk->transparent || has_addr || addr_type == IPV6_ADDR_ANY)) return -EADDRNOTAVAIL; |