[SOLVED] IPv4 access lost after VM snapshot rollback

[r4dh4l]

Hi,

I had a problem after upgrading one of my VMs to Debian 11 so I made a rollback followed by a VM restart. Now the VM has lost it's IPv4 address, only IPv6 is available:


My Proxmox version in use is: 6.4-14

Any ideas how this could happen and how I can get back the IPv4 address?

 

[shrdlicka]

Hi,

how does the container get its IP addresses normally?

 

[r4dh4l]

Thank your for your reply.

> how does the container get its IP addresses normally?

Via DCHP and I've changed nothing in my router config. The only thing I can remember which maybe could cause the problem is that I create the snapshot while the VM was running. Maybe I had to shutdown the VM to get a "clean" snapshot?

 

[r4dh4l]

For some reason the VM got an IPv4 after shutting down and restarting instead of just rebooting.

/solved

 

[r4dh4l]

Because I had the same problem with another VM: Maybe the DHCP lease time of my router was too long (3 weeks). After setting it to 30 minutes the VM got the usual IP back.