If you are trying to go to x.x..37.180:81, and it redirects it to x.x.114.140, we should see this coming in on a debug flow basic. The previous debug flow basic showed that it was coming to the interface, and not the VIP.
You might also want to check the upstream switch or router, and see what it sees as the ARP entry for x.x.114.140. The ARP should show x.x.114.140 with the MAC address of the NS208 interface