Date: Tue, 03 Apr 2018 07:54:00 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 227243] getaddrinfo(3): IPv4-only jail on IPv4+6 host gets ipv6 inaddr_any Message-ID: <bug-227243-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D227243 Bug ID: 227243 Summary: getaddrinfo(3): IPv4-only jail on IPv4+6 host gets ipv6 inaddr_any Product: Base System Version: 11.1-STABLE Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: bin Assignee: freebsd-bugs@FreeBSD.org Reporter: phk@FreeBSD.org On 11.1-RELEASE-p4 amd64. The host has both IPv4 and IPv6 addresses configured. The jail has only an IPv4 address configured. getaddrinfo(3) with a NULL argument an AI_PASSIVE returns IPv6 address ("::= ") which cannot used to establish a listen socket because there are no IPv6 addresses in the jail. As far as I can tell, this happens because IPv6 is before IPv4 in afdl[] and explore_null() is not smart enough to spot it is in an IPv4-only jail. I'm not sure if this should be fixed in getaddrinfo.c or in the kernel (to = make socket(2) fail in IPv6 in IPv4 only jails). --=20 You are receiving this mail because: You are the assignee for the bug.=
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