During the build-out of magru we realised that the work done under T306649 to automate building the BGP groups and peer IPs for our network equipment did not cover virtual machines.
The automation was done in a way which meant that existing configured peers were not removed when the static yaml for peers was deleted, but we are not generating the config for these currently. That meant in Magru we had to add manually, as well as set bgp=false in Netbox to prevent Homer trying to add the peerings to the CRs there (VMs should instead peer directly with the top-of-rack switch matching the ganeti cluster they're in).
Creating this task to track efforts to resolve this.