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    Subject[PATCH 5.3 015/344] selftests: Update fib_tests to handle missing ping6
    Date
    From: David Ahern <dsahern@gmail.com>

    [ Upstream commit 0360894a05ed52be268e3c4d40b2df9d94975fa6 ]

    Some distributions (e.g., debian buster) do not install ping6. Re-use
    the hook in pmtu.sh to detect this and fallback to ping.

    Fixes: a0e11da78f48 ("fib_tests: Add tests for metrics on routes")
    Signed-off-by: David Ahern <dsahern@gmail.com>
    Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---
    tools/testing/selftests/net/fib_tests.sh | 4 +++-
    1 file changed, 3 insertions(+), 1 deletion(-)

    --- a/tools/testing/selftests/net/fib_tests.sh
    +++ b/tools/testing/selftests/net/fib_tests.sh
    @@ -17,6 +17,8 @@ PAUSE=no
    IP="ip -netns ns1"
    NS_EXEC="ip netns exec ns1"

    +which ping6 > /dev/null 2>&1 && ping6=$(which ping6) || ping6=$(which ping)
    +
    log_test()
    {
    local rc=$1
    @@ -1100,7 +1102,7 @@ ipv6_route_metrics_test()
    log_test $rc 0 "Multipath route with mtu metric"

    $IP -6 ro add 2001:db8:104::/64 via 2001:db8:101::2 mtu 1300
    - run_cmd "ip netns exec ns1 ping6 -w1 -c1 -s 1500 2001:db8:104::1"
    + run_cmd "ip netns exec ns1 ${ping6} -w1 -c1 -s 1500 2001:db8:104::1"
    log_test $? 0 "Using route with mtu metric"

    run_cmd "$IP -6 ro add 2001:db8:114::/64 via 2001:db8:101::2 congctl lock foo"

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