[  727.859684][T20726] veth0: entered allmulticast mode
[  727.860043][T20726] veth1: entered allmulticast mode
[  727.860299][T20726] veth2: entered allmulticast mode
[  727.860533][T20726] veth3: entered allmulticast mode
[  736.052035][T20817] tc (20817) used greatest stack depth: 23440 bytes left
[  738.245680][T20726] veth0: left allmulticast mode
[  738.245928][T20726] veth1: left allmulticast mode
[  738.246115][T20726] veth2: left allmulticast mode
[  738.246313][T20726] veth3: left allmulticast mode