The behavior of parsing IPv4 embedded IPv6 host parser will be updated to strictly follow the web URL standard: https://url.spec.whatwg.org/#concept-ipv6-parser The introduced restrictions on the IPv6 address are: * The embedded IPv4 address shall always consist of 4 parts. Addresses with less than 4 parts like http://[::1.2] will be no longer valid. The feature is a part of the URL interop 2023.
Samples: https://chromium-review.googlesource.com/c/chromium/src/+/4206417