I have a router with one inside interface and two outside interfaces. Outside interface #1 goes to ISP #1, and Outside interface #2 goes to ISP #2. The âusersâ on the inside network have ISP #1 DNS servers hard coded and changing them right now is not an option. I need it so that when the primary path fails over from ISP #1 to ISP #2, everything just works.
I looked at using âip nat inside destinationâ, to translate requests going to ISP #1 dns into ISP #2 DNS, but it doesn't let me tie it to a route-map, so I can't say âOnly translate if packets are going out ISP #2â. Does anyone know how to translate a destination and tie it to a route-map or something similar so it only happens if packets are going out ISP #2?