Date: Tue, 22 Oct 2013 19:33:47 +0100 From: Matthew Seaman <matthew@FreeBSD.org> To: freebsd-questions@freebsd.org Subject: Re: IPV6 multiple addresses with same prefix Message-ID: <5266C50B.9050102@FreeBSD.org> In-Reply-To: <20131022183548.9b18fc59e4374e7274d0e116@sohara.org> References: <20131022183548.9b18fc59e4374e7274d0e116@sohara.org>
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[-- Attachment #1 --] On 22/10/2013 18:35, Steve O'Hara-Smith wrote: > Hi, > > Does anyone here know of a way to set multiple IPV6 addresses with > the same prefix on an interface so that a jail can have it's own IPV6 > address ? When I try it ifconfig happily assigns the second address but it > gets flagged as 'duplicate' and no traffic gets to the jail using /64 > or /128 makes no difference, even ping6 fails to get responses. > Works for me... lucid-nonsense:/home/matthew:# ifconfig em0 em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 options=4219b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,WOL_MAGIC,VLAN_HWTSO> ether 68:05:ca:0b:3d:42 inet6 2001:8b0:151:1:3850:9ee6:9c6b:8a8b prefixlen 64 inet6 fe80::6a05:caff:fe0b:3d42%em0 prefixlen 64 scopeid 0x5 inet 81.2.117.97 netmask 0xfffffff8 broadcast 81.2.117.103 inet6 2001:8b0:151:1:3cd3:cd67:fafa:3d78 prefixlen 64 inet6 2001:8b0:151:1:78ea:429a:bbd9:f62f prefixlen 64 inet6 2001:8b0:151:1:c2f:23d1:314c:5e2e prefixlen 64 inet6 2001:8b0:151:1:e2cb:4eff:fe26:6481 prefixlen 64 inet6 2001:8b0:151:1:38df:dfbd:32df:5017 prefixlen 64 inet6 2001:8b0:151:1:68b2:667a:d0cc:7c8f prefixlen 64 inet6 2001:8b0:151:1:18d3:a7d:fe4:1d6a prefixlen 64 inet6 2001:8b0:151:1:6a05:caff:fe0b:3d42 prefixlen 64 inet6 2001:8b0:151:1:: prefixlen 64 anycast inet6 2001:8b0:151:1:54f9:9484:e8b0:12d1 prefixlen 128 nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL> media: Ethernet autoselect (100baseTX <full-duplex>) status: active ... and at least one of those IPv6 IPs is for a jail. rc.conf settings are like so: ipv6_prefix_em0="2001:8b0:151:1" ifconfig_em0_ipv6="inet6 2001:8b0:151:1:3850:9ee6:9c6b:8a8b/64" ifconfig_em0_alias0="inet6 2001:8b0:151:1:3cd3:cd67:fafa:3d78/64" ifconfig_em0_alias1="inet6 2001:8b0:151:1:78ea:429a:bbd9:f62f/64" ifconfig_em0_alias2="inet6 2001:8b0:151:1:c2f:23d1:314c:5e2e/64" ifconfig_em0_alias3="inet6 2001:8b0:151:1:e2cb:4eff:fe26:6481/64" ifconfig_em0_alias4="inet6 2001:8b0:151:1:38df:dfbd:32df:5017/64" ifconfig_em0_alias5="inet6 2001:8b0:151:1:68b2:667a:d0cc:7c8f/64" ifconfig_em0_alias6="inet6 2001:8b0:151:1:18d3:a7d:fe4:1d6a/64" for the aliases, and like so: jail_xenophobe_hostname="xenophobe.infracaninophile.co.uk" jail_xenophobe_rootdir="/jail/xenophobe" jail_xenophobe_ip="2001:8b0:151:1:54f9:9484:e8b0:12d1" jail_xenophobe_mount_enable="YES" jail_xenophobe_zfs="zroot/jail/xenophobe zroot/jail/xenophobe/TimeMachine" jail_xenophobe_params="enforce_statfs=1" for the jail. Cheers, Matthew -- Dr Matthew J Seaman MA, D.Phil. PGP: http://www.infracaninophile.co.uk/pgpkey [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.20 (Darwin) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQJ8BAEBCgBmBQJSZsUTXxSAAAAAAC4AKGlzc3Vlci1mcHJAbm90YXRpb25zLm9w ZW5wZ3AuZmlmdGhob3JzZW1hbi5uZXQ2NTNBNjhCOTEzQTRFNkNGM0UxRTEzMjZC QjIzQUY1MThFMUE0MDEzAAoJELsjr1GOGkATrLsQAKri2lc/cr8p7CT/VQ5ChBPF RUxNpue2EBggvBfrDL2zobdwiAkJTiV2VF9XJmbLno5QScW7le9QhEcX0EilyL/E ecGL9OG/sahl+46JhQKF2FvzbjBWaFj2qgAQpdafvEZqxnKNcC8sGhF6f2BKTZgf yYVKpAhDdM4Tydsd2M8sUyOJ45DoVPVpzZ1665UK017zeRhRJQ+i4+dfInPch4hz xsWWpt9qhlaKygXOegWS0oAwNkUjUrKWmjISbZ8Sin/zj+sHnjssId2jGlN+Tzni PHGV59yByx5hQepLXLKZzMhumZNkZYPupcorMNzD6e22cIraEh8iafC+3+89v3L/ YViXUnr6vn5qbXYwYxlHu5dXJlDx+hEuXj3AmfwHrv8phwLi//9a621nT8MpTGit Ia5mVWpeuaa3KZXallH4resgi3uvjGcoym2SaDSxPtheudFx1guRLK+7vSDlvMfR lS0KwUKERjdgUDpZGimstInmbyVc6ZlJKeKfgqvTy+RfUJ/mPMjqCDWfRQktnq/z IYuu8bK9ykPIXq31wP2OaXRmmqw+FFC39L/p2f0X3Tfmk3WYVIJxJ77aSSkpceMr 0aZwy3uQXjv24ERVeVogYdE8XxwEqavY4EkazCX4PcYD4JLksURKV+72XZr8slQT iuXu6F20UGQk5OZXyLFS =J/8z -----END PGP SIGNATURE-----
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