Hey there,

I'd like to propose a feature to allow subnets to be added to Neutron ports and be allocated from a subnet-pool. We would have a couple of use cases for this. Please correct me if I am wrong, but right now we do not have a method to route a subnet to a VM without adding many fixed-ips from the subnet the VM is residing in. This is highly undesirable for us as our use case would be with Kubernetes. We'd like to be able to allocate a IPv6 subnet for every Kubernetes Node, so that every pod can get a fully routed v6 address without resorting to NAT.

While searching the mailing list for IPv6 in general I found another person having a similar inquiry. In his case he wanted a subnet to use for his VPN-VM. This is also something we want to address and provide to our customers at some point.

This is why I would like to propose that AllowedIP subnets can be created based on subnet pools, making it possible to route them externally. This will also make it possible for something like the OVN-BGP-Agent to expose them via BGP. Does anybody have any thoughts on this?

Best regards,
Justin