Add note about IPv4 lowest-address broadcast change.

[karels]

Summary

Document change for lowest address / host 0.

Test Plan

tested with local website build

[karels]

Any comments from the doc folks?

I don't have a doc commit bit, so I presume someone else needs to commit this. The first line should probably be started with something like "13.1 relnotes:".

[pauamma_gundo.com]

Other than the URL change, English LGTM.

website/content/en/releases/13.1R/relnotes.adoc

175

Current Internet Draft URL (https://datatracker.ietf.org/doc/draft-schoen-intarea-lowest-address/ expired on March 22)

[karels]

Update URL.

[karels]

I used the previous URL because it was cited in the commit, but I suppose it makes sense to use the newer one.

[karels]

Am I allowed/able to commit this with only a src commit bit, or can someone else do it?

[gjb]

In D34788#788463, @karels wrote:

Am I allowed/able to commit this with only a src commit bit, or can someone else do it?

I am a doc committer, so you can consider this approval.