Beantwoorden Allen beantwoorden Doorsturen    
Van: Mike Hoffs <[email protected]>
Aan: Willy Tarreau <[email protected]>
Datum: 10/17/2010 09:40 PM 
Onderwerp: Re: ipv6 implementation forwardfor except
> > > Hi Mike, 
> > > 
> > > > Is it possible to implement at forwardfor except ipv6 ? 
> > > 
> > > It should not be hard to do. However, as noted in the source, it's a bit 
> > > useless, because while IPv6 is used over the net, it's particularly rare 
> > > on the local network, and the "except" keyword is only used to reference 
> > > your local SSL proxies. Most often, it will only contain 127.0.0.0/8 or 
> > > your local LAN address. 
> > 
> > I know but then we need two entry's for haproxy for one single ipv6 
> address that we tunnel to ipv4. 
> > 
> > > 
> > > > Now it is only possible to except a ipv4 address. If that is possible 
> we 
> > > can also make the legacy stuff with ssl ipv6 reachable. 
> > > 
> > > In my opinion, this is independant. You can very well have your SSL 
> reverse 
> > > proxy receive IPv6 traffic and forward it to haproxy on 127.0.0.1 
> (IPv4). 
> > > 
> > > Do you have a concrete example where it's really needed ? 
> > 
> > Yes; 
> > 
> > Haproxy is configured to listen on ipv6 at port 80, both should be 
> reachable (80 & 443). With stunnel we capture 443 traffic, and tunnel it to 
> the single entry in haproxy. Haproxy is configured with forwardfor, stunnel 
> also. Now we have 2 ipv6 in the headers, and it would be nice to except the 
> local ipv6. With the solution to handle it on the local ipv4 should do the 
> trick but with many ssl hosts its a bit messy. With single entry we keep te 
> haproxy config clean. 
> 
> OK I see. I agree with you that if your setup is IPv6-only, then it makes 
> sense. It's not a common setup though. I'll try to figure out the required 
> changes to support that. 

I think more hosters in the same situation who want to adopt ipv6 also for the 
legacy stuff will run in this situation. It will be a great addition for us and 
hopefully for others. We run version 1.4.8 if u want i can test the changes. 

> 
> Regards, 
> Willy 
> 

Thanks in advance, 
Regards, 
Mike

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