Bug#926229: New QoS defaults break systems running on VMWare
Package: openssh-client
Version: 1:7.9p1-9
X-Debbugs-CC: cjwatson@debian.org
This is related, but not the same as [1] and about the new defaults in
regard to QoS.
Due to upstream change [2] the new defaults now mean that ssh is
broken if connecting to (or through) a system running on VMWare.
More details can be found on the Ubuntu bug [3] where this was
reported initially.
As [1] I'd ask for a revert of that change until iptables (for [1]),
vmware (for this bug) and others if identified later will be fixed
(the actual issue is in those components, so sooner or later this
should no more be needed to be reverted).
Final FYI - Fedora [4] took the decision to force the issue by
sticking with the new default.
After all the "workaround" is user controllable being:
Configure your client to use the old defaults permanently in
=> /etc/ssh/ssh_config
Host *
IPQoS lowdelay throughput
# You might want to limit to your VMware based systems
Or per command via:
$ ssh IPQoS="latency throughput" user@host
I thought it is better to file it to make you aware of this extra
context to [1] so that you can consider those two requests to revert
[2] together.
[1]: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=923879
[2]: https://anongit.mindrot.org/openssh.git/commit/?id=5ee8448ad7c306f05a9f56769f95336a8269f379
[3]: https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/1822370
[4]: https://bugzilla.redhat.com/show_bug.cgi?id=1624437#c8
--
Christian Ehrhardt
Software Engineer, Ubuntu Server
Canonical Ltd
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