Not getting an IPv6 in a jail

[Bjoern A. Zeeb]

On Tue, 1 Sep 2009, Major Domo wrote:

Hi,

> Apologies if this has been discussed already but I searched the web
> and the mailing lists and haven't found hints on my problem.
>
> I've got a jail, I assign it a set of IP addresses, and it just won't
> take the IP6 I give it.
>
>
> Uname:
> FreeBSD 7.2-STABLE
>
> jail_ns_ip="192.168.0.252,fe80::c0a8:fc"
>
> jls -v:
>   JID  Hostname                      Path
>        Name                          State
>        CPUSetID
>        IP Address(es)
>    23  [snip]                      /var/jail/ns
>                                      ALIVE
>        2
>        192.168.0.252
>        fe80::c0a8:fc
>
>
> ifconfig lo252 from the host:
> lo252: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
>        inet 192.168.0.252 netmask 0xffffffff
>        inet6 fe80::c0a8:fc%lo252 prefixlen 128 scopeid 0x5
>
>
> ifconfig from the jail:
> re0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
>        options=389b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_UCAST,WOL_MCAST,WOL_MAGIC>
>        ether 00:e0:f4:19:e9:d2
>        media: Ethernet autoselect (100baseTX <full-duplex>)
>        status: active
> lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
> pflog0: flags=141<UP,RUNNING,PROMISC> metric 0 mtu 33204
> lo252: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
>        inet 192.168.0.252 netmask 0xffffffff


This is a rather special case.  For link-local addresses you have to
give the scope as well but it won't take the scope with the %lo252
notation but only in the KAME in-kernel syntax I would assume.
Can you try:

jail_ns_ip="192.168.0.252,fe80:5::c0a8:fc"

Note the added 5 in the second group of hex digits.  That five is the
interface index.  I took it from the "scopeid 0x5". In case your
interface index changes you will need to adjust the address.

I cannot say if it'll work but it would be worth a try.

/bz

-- 
Bjoern A. Zeeb           What was I talking about and who are you again?