The first patch fixes the issue.
The second patch adds related tests in selftests.

v2 -> v3:
 update seltests
 fix ipv6

v1 -> v2:
 add the tag "Cc: stable@vger.kernel.org" for correct stable submission

 net/ipv4/ping.c                           | 12 +++++++++++-
 tools/testing/selftests/net/fcnal-test.sh | 12 ++++++++++++
 2 files changed, 23 insertions(+), 1 deletion(-)

Comments are welcome,
Nicolas