Rollup merge of #53213 - tmccombs:stable-ipconstructors, r=KodrAus
Rollup merge of #53213 - tmccombs:stable-ipconstructors, r=KodrAus

Stabilize IP associated constants

Fixes #44582

aidancully/rust,aidancully/rust,GBGamer/rust,aidancully/rust,GBGamer/rust,graydon/rust,graydon/rust,aidancully/rust,graydon/rust,graydon/rust,GBGamer/rust,aidancully/rust,GBGamer/rust,GBGamer/rust,GBGamer/rust,GBGamer/rust,GBGamer/rust,aidancully/rust,graydon/rust,graydon/rust