Re: [PATCH net v3 1/2] ping: fix address binding wrt vrf

[David Ahern <dsahern@kernel.org>]

On 5/4/22 2:07 AM, Nicolas Dichtel wrote:
> When ping_group_range is updated, 'ping' uses the DGRAM ICMP socket,
> instead of an IP raw socket. In this case, 'ping' is unable to bind its
> socket to a local address owned by a vrflite.
> 
> Before the patch:
> $ sysctl -w net.ipv4.ping_group_range='0  2147483647'
> $ ip link add blue type vrf table 10
> $ ip link add foo type dummy
> $ ip link set foo master blue
> $ ip link set foo up
> $ ip addr add 192.168.1.1/24 dev foo
> $ ip addr add 2001::1/64 dev foo
> $ ip vrf exec blue ping -c1 -I 192.168.1.1 192.168.1.2
> ping: bind: Cannot assign requested address
> $ ip vrf exec blue ping6 -c1 -I 2001::1 2001::2
> ping6: bind icmp socket: Cannot assign requested address
> 
> CC: stable@vger.kernel.org
> Fixes: 1b69c6d0ae90 ("net: Introduce L3 Master device abstraction")
> Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
> ---
>  net/ipv4/ping.c | 12 +++++++++++-
>  1 file changed, 11 insertions(+), 1 deletion(-)
> 

Reviewed-by: David Ahern <dsahern@kernel.org>