[  837.207481][T21520] veth0: entered allmulticast mode
[  837.207908][T21520] veth1: entered allmulticast mode
[  837.208142][T21520] veth2: entered allmulticast mode
[  837.208380][T21520] veth3: entered allmulticast mode
[  847.872317][T21520] veth0: left allmulticast mode
[  847.872555][T21520] veth1: left allmulticast mode
[  847.872731][T21520] veth2: left allmulticast mode
[  847.872909][T21520] veth3: left allmulticast mode