Date: Thu, 10 Aug 2017 08:30:58 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 221385] [Regression] v6 mapped v4 addresses not working in 11.1 Message-ID: <bug-221385-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=221385 Bug ID: 221385 Summary: [Regression] v6 mapped v4 addresses not working in 11.1 Product: Base System Version: 11.1-RELEASE Hardware: Any OS: Any Status: New Keywords: regression Severity: Affects Only Me Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: seb@struchtrup.com Keywords: regression Created attachment 185224 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=185224&action=edit Test case to reproduce the problem Having set sysctl net.inet6.ip6.v6only=0, v6-mapped v4 addresses used to work on 11.0 and on previous versions. On 11.1-RELEASE, I am now getting EAFNOSUPPORT on connect() when using a v6-mapped address on a PF_INET6 socket. Adding an extra setsockopt to clear IPV6_V6ONLY will work around this. # sysctl net.inet6.ip6.v6only net.inet6.ip6.v6only: 0 # uname -a FreeBSD s5.struchtrup.com 11.1-RELEASE FreeBSD 11.1-RELEASE #0 r321309: Fri Jul 21 02:08:28 UTC 2017 root@releng2.nyi.freebsd.org:/usr/obj/usr/src/sys/GENERIC amd64 truss output (stripped) - failing case w/o setsockopt: socket(PF_INET6,SOCK_STREAM,0) = 3 (0x3) connect(3,{ AF_INET6 [::ffff:127.0.0.1]:1234 },28) ERR#47 'Address family not supported by protocol family' truss output with setsockopt: socket(PF_INET6,SOCK_STREAM,0) = 3 (0x3) setsockopt(3,IPPROTO_IPV6,IPV6_V6ONLY,0x7fffffffea94,4) = 0 (0x0) connect(3,{ AF_INET6 [::ffff:127.0.0.1]:1234 },28) = 0 (0x0) -- You are receiving this mail because: You are the assignee for the bug.
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