Javadoc
For all members of the digest, adjust the retransmit buffers in xmit_table. If no entry
exists, create one with the initial seqno set to the seqno of the member in the digest. If the member already
exists, and is not the local address, replace it with the new entry (http://jira.jboss.com/jira/browse/JGRP-699)
if the digest's seqno is greater than the seqno in the window.