DNS RR & Dual Directors ???

Hello all,

Anyone know if this is possible with LVS directors:

DNS |------------- Director1/2 =====>| Real 
 RR |------------- Director3/4 =====>| Servers

Note:  Director1/2 have heartbeat.
       Director3/4 have heartbeat.
       The SAME Real Servers are routed to by 
       both sets of directors.
       Yes I know this is overly-redundant.

Using NAT routing, the problem I see is setting the
Real Servers default gateway to the NAT Router IP
Address(es) of the Directors.  That is, each set of
Directors have their own NAT Router IP address, so
these seems to be a show stopper, no??? In other words
all the Real Servers can only have ONE DEFAULT
GATEWAY.
If there is a working way around this, let me know?

Also, with the latest kernels, does Tunneling and
Direct Routing work yet, without having to apply some
patch???   Specificially Red Hat kernels?

Thanks
Peter



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