Re: [squid-users] Issue with multiple Squids / TPROXY / WCCP and DNS load balancing

> > > This causes the Cisco router to redirect the response to the other
> > > Squid server which just drops it.

> mån 2009-08-17 klockan 10:42 +0200 skrev Matus UHLAR - fantomas:
> > I think that is a bad configuration on DNS or your network.

On 17.08.09 23:43, Henrik Nordstrom wrote:
> No. It's a natural consequence of TPROXY+WCCPv2 balancing based on
> requested IP, with separate DNS lookups done by the client & Squid. You
> can limit some of it by DNS server hackery to implement IP pinning in
> the DNS server but not eleminate it.

AHa, I missed the part with load balancing on destination IP. Yes, that is
the reason.

> The workaround is simple, but not without drawbacks.. don't balance on
> the destination IP, balance on the client IP instead.

and configure squids to behave as siblings with proxy-only option, so the
same content won't be duplicated on them.

> The solution is to extend Squid to connect to the requested IP on
> intercepted requests, but requires some extra validations to avoid cache
> poisoning.

doable imho.

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