Add ipv4 /32 and ipv6 /128 prefix support

[crafty-ua]

NetBox version

v2.10.3

Feature type

Change to existing functionality

Proposed functionality

Add ipv4 /32 and ipv6 /128 prefix support

Use case

While testing netbox I've noticed that it does not allow user to create single-host networks. In my case I would like to use such feature to track end-user IP-unnumbered allocations while also keeping those /32 networks linked to a vlan

Database changes

No response

External dependencies

No response

[jeremystretch]

I think it makes sense to allow this. IIRC we prevented the use of /32 and /128 masks originally to prevent confusion with IP addresses, but that was a long time ago.

[crafty-ua]

@jeremystretch
Cool. I wonder if you would like me to create some sort of initial PR to implement such behavior?

[jeremystretch]

@crafty-ua let's leave this open for a bit to gather feedback. If there's no opposition, then yes. We should just need to remove the validation rules that check for /32 and /128 prefix lengths on the Prefix model.

[crafty-ua]

Awesome!

// 219d242 -- That PR might be useful

[jeremystretch]

@crafty-ua assigned this to you. You're good to submit a PR. 👍

[jeremystretch]

@crafty-ua are you still interested in submitting a PR for this? If not, I can take it.

[crafty-ua]

@jeremystretch
Sure. Just returned from a short vacation today

[crafty-ua]

Pushed an initial PR fully based on code 219d242. Going to try running some tests in lab later on tomorrow