Re: [PATCH] net: ipv6: Add IPv6 support to the ping socket.

[David Miller <davem@davemloft.net>]

From: Lorenzo Colitti <lorenzo@google.com>
Date: Thu, 23 May 2013 15:17:31 +0900

> This adds the ability to send ICMPv6 echo requests without a
> raw socket. The equivalent ability for ICMPv4 was added in
> 2011.
> 
> Instead of having separate code paths for IPv4 and IPv6, make
> most of the code in net/ipv4/ping.c dual-stack and only add a
> few IPv6-specific bits (like the protocol definition) to a new
> net/ipv6/ping.c. Hopefully this will reduce divergence and/or
> duplication of bugs in the future.
> 
> Caveats:
> 
> - Setting options via ancillary data (e.g., using IPV6_PKTINFO
>   to specify the outgoing interface) is not yet supported.
> - There are no separate security settings for IPv4 and IPv6;
>   everything is controlled by /proc/net/ipv4/ping_group_range.
> - The proc interface does not yet display IPv6 ping sockets
>   properly.
> 
> Tested with a patched copy of ping6 and using raw socket calls.
> Compiles and works with all of CONFIG_IPV6={n,m,y}.
> 
> Signed-off-by: Lorenzo Colitti <lorenzo@google.com>

Ok, looks pretty good, applied.