make -C tools/testing/selftests TARGETS=net TEST_PROGS=sk_connect_zero_adddr TEST_GEN_PROGS="" run_tests
make: Entering directory '/home/virtme/testing-1/tools/testing/selftests'
make[1]: Entering directory '/home/virtme/testing-1/tools/testing/selftests/net'
make[1]: Nothing to be done for 'all'.
make[1]: Leaving directory '/home/virtme/testing-1/tools/testing/selftests/net'
make[1]: Entering directory '/home/virtme/testing-1/tools/testing/selftests/net'
TAP version 13
1..1
# timeout set to 6000
# selftests: net: sk_connect_zero_addr
[ 1258.734315] TCP: request_sock_TCPv6: Possible SYN flooding on port [::]:20000. Sending cookies.
ok 1 selftests: net: sk_connect_zero_addr
make[1]: Leaving directory '/home/virtme/testing-1/tools/testing/selftests/net'
make: Leaving directory '/home/virtme/testing-1/tools/testing/selftests'
xx__-> echo $?
0
xx__->