[Bug 219699] Issue with IPv6 and neighbor notification

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=219699

--- Comment #7 from Paul G Webster <paul at tmp.group> ---
A little more on this fault; with the help of the host we have a working
solution, from the host them self:

--quote
FreeBSD appears to use the link local address on the interface to send neighbor
advertisements for the addresses it would like to be routed towards it,
unfortunately our side only allows you to send neighbor advertisements from an
allowed allocated prefix not an fe80:: address.

I have added an exception for this, could you try stopping your work around for
now and seeing if IPv6 carries on working?
--/quote

To cut a story short and many tickets later yes in fact the work around did
work, the host is using 'ebtables' on there host; they have contacted the panel
provider hoping they can patch the upstream.

Will update if I can get a little more detail on what the patch was or a copy
of it hopefully :)

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