Re: RFC1812 and CLUSTERIP

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Author: Patrick McHardy
Date:  
To: oan
CC: netfilter-devel
Subject: Re: RFC1812 and CLUSTERIP
Oskar Andreasson wrote:
> Hi all again,
>
> I've snowed in on the CLUSTERIP target to some extent, and I am still
> figuring it out to some extent.
>
> One question that came to mind is its use of multicast MAC addresses. Is
> it really allowed to make use of them in the way that it is right now?
>
> From RFC 1812 section 3.3.2:
>
> ------
> A router MUST not believe any ARP reply that claims that the Link
> Layer address of another host or router is a broadcast or multicast
> address.
> ------
>
> As I understand it, this is exactly what the CLUSTERIP target does?
> Behaves as if a single host has a multicast address?


I'm not too familiar with the CLUSTERIP target, what behaviour
exactly are you refering to?