[ 1529.044047][ T6937] tc (6937) used greatest stack depth: 23440 bytes left
[ 1529.177941][    C1] tc mirred to Houston: device veth2 is down
[ 1529.413889][    C1] tc mirred to Houston: device veth2 is down
[ 1529.997835][    C3] tc mirred to Houston: device veth2 is down
[ 1530.112967][    C3] tc mirred to Houston: device veth3 is down
[ 1530.189816][    C3] tc mirred to Houston: device veth3 is down
[ 1530.190270][    C3] tc mirred to Houston: device veth2 is down