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    SubjectRe: 2.6.29 regression? Bonding tied to IPV6 in 29-rc5
    Andrey Borzenkov wrote:
    > On 17 of February 2009 20:01:38 Andrey Borzenkov wrote:
    >> Forward to bonding and netdev
    >> On 17 of February 2009 11:52:32 J.A. Magallón wrote:
    >>> Hi all...
    >>> Don't know if this is specific for -rc5, I have jumped from 28.4 to
    >>> 29-rc5. In this latest kernel, I can not install 'bonding' module
    >>> if 'ipv6' is disabled to load via modprobe.conf:
    >>> install ipv6 /bin/true
    >>> Trying bonding gives this dmesg:
    >>> bonding: Unknown symbol ndisc_build_skb
    >>> bonding: Unknown symbol in6_dev_finish_destroy
    >>> bonding: Unknown symbol ndisc_send_skb
    >>> bonding: Unknown symbol unregister_inet6addr_notifier
    >>> bonding: Unknown symbol register_inet6addr_notifier
    >>> Commenting the line in modprobe.conf makes things smooth again.
    >>> We can not disable ipv6 anymore ?
    >> If IPv6 is disable in kernel config bonding loads. But I think it is
    >> regression, it should be possible to disable IPv6 if not required.
    > This hard dependency was apparently introduced by this commit:
    > commit 305d552accae6afb859c493ebc7d98ca3371dae2
    > Author: Brian Haley <>
    > Date: Tue Nov 4 17:51:14 2008 -0800
    > bonding: send IPv6 neighbor advertisement on failover

    I initially had bonding IPv6 support as a Kconfig option, but it was
    decided it would be cleaner if it just got built-in whenever CONFIG_IPV6
    was set like SCTP, with the assumption you might want it.

    Is it a common configuration to not allow a module to load like you're
    doing in modprobe.conf? I don't know how hard it would be to rip this
    out into it's own bonding_ipv6.ko module, simply turning-off CONFIG_IPV6
    seems better.

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