make -C tools/testing/selftests TARGETS="net/forwarding" TEST_PROGS=bridgee_mdb_port_down.sh TEST_GEN_PROGS="" run_tests
make: Entering directory '/home/virtme/testing/wt-2/tools/testing/selftests'
make[1]: Entering directory '/home/virtme/testing/wt-2/tools/testing/selftests/net/forwarding'
make[1]: Nothing to be done for 'all'.
make[1]: Leaving directory '/home/virtme/testing/wt-2/tools/testing/selftests/net/forwarding'
make[1]: Entering directory '/home/virtme/testing/wt-2/tools/testing/selftests/net/forwarding'
TAP version 13
1..1
# timeout set to 10800
# selftests: net/forwarding: bridge_mdb_port_down.sh
# 16.94 [+16.94] ./bridge_mdb_port_down.sh: line 16:   316 Killed                  ip link set dev $swp2 down

DETECTED CRASH, lowering timeout

WAIT TIMEOUT stdout

Ctrl-C stdout

Ctrl-C stdout
^C
WAIT TIMEOUT stdout