Fabien Tassin was said to been seen saying:
> Hi,
>
> I have several Debian boxes in a dual stack LAN, some of them are servers,
> some others are workstations. Everything is fine if these boxes only
> have 1 IPv6 address assigned, but things here are not that simple.
> On servers, I'm using both an EUI-64 and a few static "service" addresses
> in a different /64 network.
>
> It used to work with eth0 for IPv4 addr, eth0:1 for static addr corresponding
> to the EUI64 (without using router advertisements) and eth0:2+ for the static
> service addrs. With a fresh 2.4.7 linux kernel (2.4.5+ only have ONE IPv6 opt)
> on a daily updated Unstable Debian box and it is no longer working :(
>
> My questions :
> - is it possible to use an EUI-64 addr using current ifupdown package ?
> (instead of faking with a static address)
I don't believe the current ifupdown mechanics support EUI-64 IP
address assignment although if you have your link-local (fe80:...) address
you should be able to build out your EUI-64 address and use that to assign
it statically or else I've used the radvd on my gateway to broadcast
the prefix through the router advertisements to all other machines on the
lan... RAs can also push through multiple prefixes and allow for easy
renumbering of your network as well... radvd with autoconf on the interface
will actually handle EUI-64 without a problem...
> - I'm no longer able to ifdown/ifup a working alias ("SIOCSIFFLAGS: Cannot
> assign requested address" for both).
I had this problem for awhile as well and then it went away and
I can't remember at this time what I had done to clear the problem... I
just install'd a new server that will be dual-stack'd and if I encounter
this again I'll let you know what I do to get it resolved...
> - it is possible to specify the pseudo default route 2000::/3 eth0 in
> the ifupdown conf (without using rc.boot scripts) ?
>
I believe you can accomplish this using the "up" option to the
interface and having it do the route command for you...
> Thank you,
> Fabien.
>
Respectfully,
Jeremy T. Bouse, CCNA
UnderGrid Network Services, LLC
(IPv6 Network Admin for NTT MCL, Inc by day :)
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