Merge PR #25755 into master

* refs/pull/25755/head:
	msg/async/Protocol*: bump global_seq when retrying connection
	msg/async/Protocol*: unregister con from accept vs mark_down race

Reviewed-by: Ricardo Dias <rdias@suse.com>
Reviewed-by: Gregory Farnum <gfarnum@redhat.com>
Reviewed-by: Haomai Wang <haomai@xsky.com>

diff --cc src/msg/async/ProtocolV1.cc
Simple merge

diff --cc src/msg/async/ProtocolV2.cc
Simple merge