Re: [lvs-users] lvs-nat: is it possible to have lvs-nat and lvs-tun with 1 geographically located web server?

[Graeme Fowler <graeme@xxxxxxxxxxx>]

William

The prerequisite for NAT to work is that the return packets from the 
realservers to clients go back through the director.

In DR or TUN you can succeed without this, but the realservers _could_ route 
back through the director - this just isn't very common.

In your case, you could add a "geographic" server to your NAT setup if and only 
if that server sends all its' responses back through the director. That may, 
but most likely won't, be possible.

Note that your understanding of things as "realservers having to see the CIP" 
is a bit wrong - they have to have a route to the clients, and it has to go the 
right way for the connection to succeed. That is to say that the two ends of 
the connection - the client and the LVS, however configured - need to complete 
the three way handshake to establish the connection.

Graeme.