[Kea-users] bind kea to non-local IP

[Munroe Sollog]

I’m happy to try to resolve my problem of sticky clients another way, I
just don’t see how.


On Thu, Dec 14, 2017 at 9:47 AM Francis Dupont <fdupont at isc.org> wrote:

> Munroe Sollog writes:
> > Actually Bind9 supports 'rescanning' for new IPs to listen on and HAProxy
> > supports listening to non-local IPs.
>
> => rescan allows to add or remove addresses to interfaces, not
> virtual addresses. The DNS uses anycast addresses which is another way
> to provide a service at a "fixed" address by multiple servers.
> Of course it works better with an essentially "state less" protocol as DNS,
> and not with DHCP at the exception of INFORM...
>
> > The real problem we experience is that there are many poorly implemented
> > dhcp clients.  When it come time to renew its IP address, it contacts its
> > last DHCP server and if that server doesn't respond, it gives up.
>
> => it is a clear (but common) violation of the protocol both at the letter
> and in the spirit.
> Perhaps it is the reason DHCPv6 requires the use of multicast?
>
> Thanks
>
> Francis Dupont <fdupont at isc.org>
>
-- 
Munroe Sollog
Senior Network Engineer
munroe at lehigh.edu
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