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SubjectRe: [PATCH] s390 - mark IPv6 support for QETH as broken
In article <> (at Fri, 9 Jul 2004 21:15:17 +0200), Christian Borntraeger <> says:

> Andrew Morton wrote:
> > Bastian Blank <> wrote:
> > > The attached patch marks IPv6 support for QETH broken, it is known to
> > > need an extra patch to compile which was submitted one year ago but
> > > never accepted.
> >
> > Well fixing it would be the preferable approach. Where is the "extra
> > patch" and what was the complaint?

I don't see why it does NOT compile as you said.
It tried to add scheme for driver-specific interface identifier
(including EUI-64 based on hardware address) generation scheme
(in addition to the current ont; device-type-specific one).

> The problem is that on s390 several virtual servers share the PHY and MAC
> part of the card and therefore have the same MAC address. Unfortunately
> IPv6 uses this MAC address to build an address. Now all virtual servers
> have the same auto configured IPv6 address - which is bad.
> The proposed solution was to enable network card drivers to define their own
> ipv6 address auto configuration.

I think it would be good to store interface identifier when
initializing interface, by RTM_NEWLINK attribute probably.

Hideaki YOSHIFUJI @ USAGI Project <>
GPG FP: 9022 65EB 1ECF 3AD1 0BDF 80D8 4807 F894 E062 0EEA
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