I have a strange issue whereby I am running certbot on a VM which is working fine, no issues.
I tried to migrate the VM onto another (physical) host as part of a server migration piece of work and when I restarted the VM on the new host, I was getting
SSL_ERROR_RX_RECORD_TOO_LONG. Going back to the old host, all works OK, which is confusing as the new host has an exact replicated version of the VM, so they should be (within 5 minutes) identical VM’s…
The VM’s were migrated via the Hyper-V replication method. Interestingly I had two nearly identical VM’s and one worked, the other one didn’t and gave the above error.
I am currently using certbot 0.10.2 on the server that is not working after the migration. The VM that migrated without issue is running certbot 0.25.0
Is there anything in 0.10.2 that could cause this? The only thing that should have changed is the MAC address of the VM as it moved to a new physical host.
Has anyone experienced this or any ideas what I can do to resolve?