Excuse me while I punch myself in the head... I had the IP number wrong all this time. Apparently the one I used is a valid machine, because as I said above, I'd fat fingered the last octet as 384 and it didn't work. The thing is we have a million and six IP ranges internally, and the 3rd octet should have been 16 not 1. I vi'ed and stared at content.xml one more time and it just jumped out at me.