Package: openssh-server Version: 1:9.0p1-1 Severity: normal I upgraded libc6 on a armhf box running a rather stale version of testing, due to installing some package that needed the new version:
2022-04-12 18:23:06 upgrade libc6:armhf 2.32-4 2.33-7 After this partial upgrade, sshing to the host failed. With -v, the last line displayed was: ssh debug1: expecting SSH2_MSG_KEX_ECDH_REPLY I fell down a rabbit hole of old bug reports about connections failing (or hanging) at that point, which seemed to indicate a MTU or other networking problem. Notably though, even ssh localhost failed like that, and it was not hanging like in old reports such as [1], so this seemed like a slightly different problem. There was nothing useful logged in the journal. I resolved the problem with this upgrade: 2022-04-13 11:38:09 upgrade openssh-server:armhf 1:8.4p1-6 1:9.0p1-1 So it seems that something about openssh 8.4p1-6 was broken by glibc 2.33. I'm filing this bug because it seems at least possible that whatever incompatability that was is still lurking, and will be triggered again by a future glibs upgrade. Kernel: Linux honeybee 5.14.0-2-armmp-lpae #1 SMP Debian 5.14.9-2 (2021-10-03) armv7l GNU/Linux -- see shy jo [1] https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/1254085
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