[ 1603.850109][ T4973] tc (4973) used greatest stack depth: 23288 bytes left
[ 1603.995099][    C1] tc mirred to Houston: device veth2 is down
[ 1604.196915][    C1] tc mirred to Houston: device veth2 is down
[ 1604.446060][    C1] tc mirred to Houston: device veth2 is down
[ 1604.780899][    C1] tc mirred to Houston: device veth2 is down
[ 1604.873816][    C2] tc mirred to Houston: device veth3 is down
[ 1604.957864][    C1] tc mirred to Houston: device veth3 is down
[ 1605.230256][    C1] tc mirred to Houston: device veth2 is down
[ 1605.230739][    C1] tc mirred to Houston: device veth2 is down