make -C tools/testing/selftests TARGETS="net" TEST_PROGS=drop_monitor_testts.sh TEST_GEN_PROGS="" run_tests

DETECTED CRASH, lowering timeout
make: Entering directory '/home/virtme/testing/wt-3/tools/testing/selftests'
make[1]: Entering directory '/home/virtme/testing/wt-3/tools/testing/selftests/net'
make[1]: Nothing to be done for 'all'.
make[1]: Leaving directory '/home/virtme/testing/wt-3/tools/testing/selftests/net'
make[1]: Entering directory '/home/virtme/testing/wt-3/tools/testing/selftests/net/lib'
make[1]: Nothing to be done for 'all'.
make[1]: Leaving directory '/home/virtme/testing/wt-3/tools/testing/selftests/net/lib'
make[1]: Entering directory '/home/virtme/testing/wt-3/tools/testing/selftests/net'
TAP version 13
1..1
# overriding timeout to 7200
# selftests: net: drop_monitor_tests.sh
# 2.87 [+2.87] 
# 2.87 [+0.00] Software drops test
# 9.71 [+6.84] Failed to stop monitoring
# 10.92 [+1.21]     TEST: Capturing active software drops                               [ OK ]
# 16.08 [+5.16] Failed to stop monitoring
# 17.32 [+1.23]     TEST: Capturing inactive software drops                             [ OK ]
# 17.78 [+0.47] 
# 17.78 [+0.00] Hardware drops test
# 24.21 [+6.43] Failed to stop monitoring
# 25.52 [+1.31]     TEST: Capturing active hardware drops                               [ OK ]
# 30.76 [+5.23] Failed to stop monitoring
# 31.98 [+1.22]     TEST: Capturing inactive hardware drops                             [ OK ]
# 32.44 [+0.47] 
# 32.44 [+0.00] Tests passed:   4
# 32.45 [+0.00] Tests failed:   0
# 32.50 [+0.06] Cannot open network namespace "ns1-ScQfUe": No such file or directory
ok 1 selftests: net: drop_monitor_tests.sh
make[1]: Leaving directory '/home/virtme/testing/wt-3/tools/testing/selftests/net'
make: Leaving directory '/home/virtme/testing/wt-3/tools/testing/selftests'
xx__-> echo $?
0
xx__->