In addition to LAG group-id, another group entry is created with type=all and action=drop

Create a LAG connectivity between a host and switch(2 member LAG) and check the dump-groups table for the switch.

On checking the dump-group table, the LAG group is created with type=select and action to the ports.

But in addition to it, an additional group entry is randomly created with group-id = all, action = drop. There is no need to have an additional group entry with a drop action explicitly specified.

mininet> sh ovs-ofctl -O Openflow13 dump-groups s1
OFPST_GROUP_DESC reply (OF1.3) (xid=0x2):
group_id=36314,type=select,bucket=weight:0,actions=output:1,output:2
group_id=60544,type=all,bucket=weight:0,actions=drop <<<<random group entry