make -C tools/testing/selftests TARGETS="net/forwarding" TEST_PROGS=mirrorr_gre_vlan.sh TEST_GEN_PROGS="" run_tests
make: Entering directory '/home/virtme/testing/wt-4/tools/testing/selftests'
make[1]: Entering directory '/home/virtme/testing/wt-4/tools/testing/selftests/net/forwarding'
make[1]: Nothing to be done for 'all'.
make[1]: Leaving directory '/home/virtme/testing/wt-4/tools/testing/selftests/net/forwarding'
make[1]: Entering directory '/home/virtme/testing/wt-4/tools/testing/selftests/net/forwarding'
TAP version 13
1..1
# overriding timeout to 21600
# selftests: net/forwarding: mirror_gre_vlan.sh

DETECTED CRASH, lowering timeout
# 29.10 [+29.10] TEST: ingress mirror to gretap                                      [FAIL]
# 29.10 [+0.00] Expected to capture == 10 packets, got 0.
# 39.55 [+10.45] TEST: egress mirror to gretap                                       [FAIL]
# 39.56 [+0.01] Expected to capture == 10 packets, got 0.
not ok 1 selftests: net/forwarding: mirror_gre_vlan.sh # exit=1
make[1]: Leaving directory '/home/virtme/testing/wt-4/tools/testing/selftests/net/forwarding'
make: Leaving directory '/home/virtme/testing/wt-4/tools/testing/selftests'
xx__-> echo $?
0
xx__->