Date: Tue, 31 Mar 2015 23:39:58 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 199078] IPv6 on a bridge only works if an attached interface has had a v6 address Message-ID: <bug-199078-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=199078 Bug ID: 199078 Summary: IPv6 on a bridge only works if an attached interface has had a v6 address Product: Base System Version: 10.1-RELEASE Hardware: amd64 OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: n+freebsd@nirf.de Created attachment 155070 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=155070&action=edit ifconfig and rc.conf I've got a bridge (bridge0) with one interface (re0) attached. bridge0 has a v6 address. Apparently (according to tcpdump) incoming IPv6 packets reach re0 but not bridge0, except when they are coming from a link local address. Outgoing v6 packets successfully pass to their destination. Example of ping6 google.com: tcpdump -i bridge0 -n not tcp 01:28:02.114762 IP6 2a01:4f8:123:4567::2 > 2a00:1450:4001:803::100e: ICMP6, echo request, seq 0, length 16 01:28:03.124809 IP6 2a01:4f8:123:4567::2 > 2a00:1450:4001:803::100e: ICMP6, echo request, seq 1, length 16 01:28:04.144537 IP6 2a01:4f8:123:4567::2 > 2a00:1450:4001:803::100e: ICMP6, echo request, seq 2, length 16 tcpdump -i re0 -n not tcp 01:29:02.200106 IP6 2a01:4f8:123:4567::2 > 2a00:1450:4001:803::100e: ICMP6, echo request, seq 0, length 16 01:29:02.205795 IP6 2a00:1450:4001:803::100e > 2a01:4f8:123:4567::2: ICMP6, echo reply, seq 0, length 16 01:29:03.224609 IP6 2a01:4f8:123:4567::2 > 2a00:1450:4001:803::100e: ICMP6, echo request, seq 1, length 16 01:29:03.230286 IP6 2a00:1450:4001:803::100e > 2a01:4f8:123:4567::2: ICMP6, echo reply, seq 1, length 16 01:29:04.222578 IP6 2a01:4f8:123:4567::2 > 2a00:1450:4001:803::100e: ICMP6, echo request, seq 2, length 16 01:29:04.228249 IP6 2a00:1450:4001:803::100e > 2a01:4f8:123:4567::2: ICMP6, echo reply, seq 2, length 16 Pinging to fe80::1%bridge0 works as intended. However, the problem can be fixed by adding any v6 address out of the same subnet to re0: ifconfig re0 inet6 2a01:4f8:123:4567::42 # ipv6 now works ifconfig re0 inet6 2a01:4f8:123:4567::42 delete # ipv6 still works -- You are receiving this mail because: You are the assignee for the bug.
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