New openssh freezes with compression on 7.2_p2-r3 -> 7.2_p2-r4
If compression is on openssh r3 has no problem but r4 freezes after just after auth.
Host *
Compression yes
A workaround is to switch from compression delayed to yes in sshd_config, but sshd should work out of the box.
(from redmine: issue id 6651, created on 2017-01-09)