Date: Fri, 31 Jul 2020 15:19:17 -0400 From: Rich Felker <dalias@...c.org> To: musl@...ts.openwall.com Subject: Re: getaddrinfo(3) with AI_V4MAPPED and AI_ALL flags On Fri, Jul 31, 2020 at 07:21:47PM +0300, Dmitry Samersoff wrote: > Hello Rich, > > I'm not sure that mapping of INADDR_ANY (0.0.0.0) and return of > ::ffff:0.0.0.0' has any sense. > > Should it be filtered out on musl level? This is an interesting question. What happens if you bind ::ffff:0.0.0.0 on an IPv6 socket? Is it the same as binding :: or does it produce a v6 socket that only accepts v4 connections? If it has its own distinct functionality then returning it when V4MAPPED is requested seems to make some sense. Rich
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