CARP and Squid?
Has anyone tried Squid with a CARP setup using advanced outbound NAT on the LAN interface? Whenever squid is active, it breaks the advanced outbound NAT rule and LAN traffic is then forwarded through the WAN address as opposed to the CARP WAN address. Does anyone have any idea why that would happen? It's as if it breaks advanced outbound NAT or something…
Doesn't matter either way. SQUID is a userland proxy and as soon as you fail over to the second host no matter what the application state is lost and any states will be lost.
So basically even if it did use the correct WAN/CARP IP the situation would not change on fail over.