[  840.817086][T20162] veth0: entered allmulticast mode
[  840.817456][T20162] veth1: entered allmulticast mode
[  840.817710][T20162] veth2: entered allmulticast mode
[  840.817942][T20162] veth3: entered allmulticast mode
[  850.193774][T20352] ip (20352) used greatest stack depth: 23240 bytes left
[  851.313206][T20162] veth0: left allmulticast mode
[  851.313466][T20162] veth1: left allmulticast mode
[  851.313658][T20162] veth2: left allmulticast mode
[  851.313840][T20162] veth3: left allmulticast mode