[ 2068.770311][T20020] tc (20020) used greatest stack depth: 23688 bytes left
[ 2068.903399][    C1] tc mirred to Houston: device veth2 is down
[ 2068.926329][    C1] tc mirred to Houston: device veth2 is down
[ 2069.070511][    C3] tc mirred to Houston: device veth2 is down
[ 2069.190388][    C3] tc mirred to Houston: device veth2 is down
[ 2069.784250][    C3] tc mirred to Houston: device veth3 is down
[ 2070.118365][    C1] tc mirred to Houston: device veth3 is down
[ 2070.246730][    C2] tc mirred to Houston: device veth2 is down
[ 2070.247703][    C2] tc mirred to Houston: device veth2 is down