Comment on I need help with networking for VirtualBox guests running on Windows hosts.
rtxn@lemmy.world 1 week agoI think you need four distinct MAC addresses for this setup, are they all different?
We have a winner!
The classroom computers were mass-deployed using Clonezilla, from a disk image that already had the VM pre-configured. As a result, every VM had the same MAC address. Bridged networking put both hosts and both VMs in the same broadcast domain, which caused collisions in the ARP tables. I randomized the MAC address of one VM and everything suddenly started working.
It’s never been an issue since we’ve never needed to use anything other than the default NAT adapter.
maxy@piefed.social 1 week ago
Thanks for the follow-up. Of course you would have some kind of mass-deployment, it didn’t think of that. I thought you’d maybe copy the Windows MAC to Linux, but… then you’d remember doing that.
Next up, they will also all have the same ssh host key ;-) (Which may be an advantage actually, but still confusing.) Those are the kind of problems cloud-init is solving, I guess.