The two addresses here are IPv6 addresses, not IPv4 addresses, as evidenced by the :: marker. The first form is an IPv6 with embedded IPv4, and it has a trailing dot that I do not understand at all, I think it's not legal syntax. The second form is two numbers in hex, so the byte value of the last 4 bytes should be 0x01020003. Which would be equivalent to the first one if there was no trailing dot, because that's the shape of an IPv4 Class B address, where the last number represents a 16-bit number, not an 8-bit number.
I'm not sure what you mean by "shortened IPv4 address" - if you mean IPv4 addresses with less than 3 dots (class B and class A addresses, when classes existed) - I think that they are indeed rarely used, since modern IPv4 networks aren't allocated in classes any more. I would want to check with other browser vendors on whether they think it's worth deprecating this syntax - it's been standardized since IPv4 was introduced, so it's a LONG tradition that you are breaking, and unless we agree with the others first, we're breaking compatibility. Harald On Wed, Jan 25, 2023 at 4:52 PM 'Jiacheng Guo' via blink-dev < blink-dev@chromium.org> wrote: > Hi everyone > > I plan to remove the shortened IPv4 address support in the URLs such as > 127.1 and 192.168.1. > WPT failures are reported because of this: > <a>: Setting <http://example.net/>.host = '[::1.2.3.]'!EQ(" > http://example.net/";, "http://[::102:3]/";) > > I've added an UMA to collect data about whether people are inputting such > kinds of addresses in the omnibox. > Data in beta showed that only 0.04% of IPv4 addresses input in the omnibox > URL are in this form. > We'd like to remove the support as a part of the URL interop. > > Jiacheng Guo > > -- > You received this message because you are subscribed to the Google Groups > "blink-dev" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to blink-dev+unsubscr...@chromium.org. > To view this discussion on the web visit > https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAJQw1Nx7a-wCL30hB3fdrNkkPYscrQLSDcjVn%2BLidG7OqreJPw%40mail.gmail.com > <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAJQw1Nx7a-wCL30hB3fdrNkkPYscrQLSDcjVn%2BLidG7OqreJPw%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "blink-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to blink-dev+unsubscr...@chromium.org. To view this discussion on the web visit https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAOqqYVFYUBVc8-nJQN%3DXMLeM3_x%3DKAiqtq_hOo-U4uEX%3DkyoMw%40mail.gmail.com.
