Retrieve the list of documented ip addresses in a given range

[aieri]

This question is similar to #657 : given an existing IP range, I can easily ask for available IPs, but I can't find a way to retrieve the IP objects that actually exist (i.e. the ones that are not available).

nb.ipam.ip_addresses.filter can filter on parent prefixes, but not ranges, and yet the NetBox UI does know that an IP is in a range (see https://<netbox url>/ipam/ip-ranges/<range id>/ip-addresses/).

The best I can think of doing is very convoluted... something like:

1. list available IPs in the range
2. use netaddr to list all possible IPs in the range (both available and unavailable ones)
3. calculate the difference between the full list and the IPs that are still available
4. lookup the VRF of the range
5. calculate the smallest prefix that would contain all the existing IPs
6. query the API filtering on parent prefix and VRF
7. exclude the results that are beyond the boundaries of the original range

There has to be a better way to retrieve those objects...