Remove global_seqno; just use instance variable seqno. This is necessary so that pnode will work.
Remove global_seqno; just use instance variable seqno.
This is necessary so that pnode will work.

weidezhang/dht,sit/dht,sit/dht,weidezhang/dht,sit/dht,sit/dht,weidezhang/dht,weidezhang/dht,weidezhang/dht,sit/dht