[SOLVED] no matching host key type found. Their offer: ssh-rsa,ssh-dss
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I had to fix a few machines myself. But it's probably better to take this breaking change now, before the release, than to have a new openssh release afterwards that fixes CVEs and end up also pushing this change into /patches as a surprise.
Upstream has been warning about this for quite some time. Hopefully the now-broken sites will fix their issues quickly.
Note that the method described above is not a fix but an unsafe work-around to buy you enough time to log in and really fix the problem correctly.
The correct solution is to upgrade OpenSSH on the server, using backports if necessary. Those old algorithms have been removed with plenty of advanced warning so that should have been done long ago. They have been considered unsafe for a long time.
Unable to negotiate with x.x.x.x port 22: no matching key exchange method found. Their offer: diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1
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