Date: Sat, 27 Aug 2016 21:26:34 +0100 From: Roger Leigh <rleigh@codelibre.net> To: freebsd-jail@freebsd.org Subject: Re: Jails and IPv6 local loopback Message-ID: <efa9c4b5-d586-cd4e-d9c3-8132c67da3ec@codelibre.net> In-Reply-To: <bd642bc0-32f4-4589-28b5-e9d3d6c4953b@codelibre.net> References: <bd642bc0-32f4-4589-28b5-e9d3d6c4953b@codelibre.net>
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On 27/08/16 17:22, Roger Leigh wrote: > Hi list, > > I saw > https://lists.freebsd.org/pipermail/freebsd-jail/2011-March/001500.html > in the archives but didn't see anything more recent. > > This is with 10.3-RELEASE [...] And after upgrade to 11.0-RC2: bfcpp% ifconfig bge0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 options=c019b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,VLAN_HWTSO,LINKSTATE> ether 38:ea:a7:ab:61:53 inet 192.168.1.12 netmask 0xffffffff broadcast 192.168.1.12 inet6 2001:8b0:860:ddbd:3aea:a7ff:feab:7002 prefixlen 128 vhid 3 nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL> media: Ethernet autoselect (1000baseT <full-duplex>) status: active lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384 options=600003<RXCSUM,TXCSUM,RXCSUM_IPV6,TXCSUM_IPV6> nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL> bfcpp% ping -c1 localhost PING localhost (127.0.0.1): 56 data bytes 64 bytes from 127.0.0.1: icmp_seq=0 ttl=64 time=0.061 ms --- localhost ping statistics --- 1 packets transmitted, 1 packets received, 0.0% packet loss round-trip min/avg/max/stddev = 0.061/0.061/0.061/0.000 ms bfcpp% ping6 -c1 localhost PING6(56=40+8+8 bytes) 2001:8b0:860:ddbd:3aea:a7ff:feab:7002 --> ::1 ping6: sendmsg: Can't assign requested address ping6: wrote localhost 16 chars, ret=-1 --- localhost ping6 statistics --- 1 packets transmitted, 0 packets received, 100.0% packet loss > As you can see, inside the jail I have a working IPv4 loopback, but not > a working IPv6 loopback. Both work correctly on the host system. This > is inconsistent, and it's breaking stuff which needs the v6 loopback to > be functional. > > Is this a case of a bad default, a misconfiguration or a bug in the > loopback support for jails? Note that 11.0-RC2 shows exactly the same behaviour. Regards, Roger
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