On 4/29/22 2:20 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 vrf exec blue ping -c1 -I 192.168.1.1 192.168.1.2 ping: bind: 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
v1 -> v2: add the tag "Cc: stable@vger.kernel.org" for correct stable submission
net/ipv4/ping.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
please add a test case to fcnal-test.sh. Does ipv6 work ok?