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    SubjectRe: [PATCH] s390 - mark IPv6 support for QETH as broken
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    In article <200407092115.18097.linux-kernel@borntraeger.net> (at Fri, 9 Jul 2004 21:15:17 +0200), Christian Borntraeger <linux-kernel@borntraeger.net> says:

    > Andrew Morton wrote:
    > > Bastian Blank <bastian@waldi.eu.org> 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?
    >
    > http://oss.sgi.com/projects/netdev/archive/2003-02/msg00061.html

    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 <yoshfuji@linux-ipv6.org>
    GPG FP: 9022 65EB 1ECF 3AD1 0BDF 80D8 4807 F894 E062 0EEA
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