Interfaces assigned to a bridge should not be allowed to be deleted. If an interface is deleted from the config, the subsequent boot will fail with a configuration error as one of the bridge interfaces is mirring.
This is true for the following interfaces:
* [x] bonding
* [x] dummy
* [x] geneve
* [x] l2tpv3
* [x] openvpn
* [x] pseudo-ethernet
* [ ] tunnel -> @thomas-mangin please add this as I do not understand that code
* [ ] vti (to be done on interface rewrite)
* [x] vxlan
* [x] wireguard -> not fully supported by current wireguard implementation (deleting all wireguard interfaces does not trigger the check) Fixed in T2244
* [x] wireless
* [x] wirelessmodem