OpenSSH 8.5 released

Posted Mar 4, 2021 16:16 UTC (Thu) by josh (subscriber, #17465)
In reply to: OpenSSH 8.5 released by nye
Parent article: OpenSSH 8.5 released

Same virtual machine, same host key, no hostname, different IPs.

OpenSSH 8.5 released

Posted Mar 4, 2021 17:43 UTC (Thu) by nye (subscriber, #51576) [Link] (4 responses)

Now I'm *really* curious. What's the application here? No worries if it's something you can't/don't want to go into.

OpenSSH 8.5 released

Posted Mar 4, 2021 22:06 UTC (Thu) by josh (subscriber, #17465) [Link] (3 responses)

Virtual machine instances that are regularly shut down and brought back up, and don't have or need a static IP. Start instance, get IP for instance, SSH to instance, work with instance, shut down instance.

OpenSSH 8.5 released

Posted Mar 7, 2021 12:21 UTC (Sun) by vadim (subscriber, #35271) [Link] (2 responses)

You can configure a DHCP server to hand out leases for a long time, like a month or even a year.

Then you'll have a lot less of this happening, as each VM will end up using the same address virtually all the time.

OpenSSH 8.5 released

Posted Mar 7, 2021 15:12 UTC (Sun) by Cyberax (✭ supporter ✭, #52523) [Link]

> Then you'll have a lot less of this happening, as each VM will end up using the same address virtually all the time.
Then you'll run out of addresses, since VMs are disposable and each new VM gets a new MAC.

OpenSSH 8.5 released

Posted Mar 8, 2021 0:22 UTC (Mon) by josh (subscriber, #17465) [Link]

Cloud providers don't typically do this in their DHCP servers. (And I think it makes sense that they don't, for a variety of reasons, not least of which that it's better to show people very quickly that IPs will change, rather than let them experience breakage later on.)