Even if I knew the format of the message sent back to the gateway from the Weather Direct server it wouldn't do me any good unless I can control what server the the gateway connects to for updates. My first thought was to change the DNS server that my router gives to the gateway to point to a DNS server that I run. That way I could point box.weatherdirect.com to any host I like. Reading through all the online help I discovered a windows set-up utility La Crosse calls ERF Viewer Along usual IP parameters there is a box for "server" but it is greyed out and not changeable from box.weatherdirect.com. I used the utility while watching the line with Wireshark to see what it does and discovered they use a broadcast UDP packet to set the parameters and sure enough the server name is in the packet. I copy the packet from Wireshark to Engage Packet Builder and change to server to my server. Sure enough the gateway switches to sending it's PUT right to my server. Since I haven't built anything to catch the request my server sends back a 404 error. The 404 error doesn't deter the gateway in the slightest, it just keeps trying and trying. I tried setting the server back to box.weatherdirect.com but it ignores me and keeps on trying to talk to my server. Uh oh, maybe I have just bricked my new toy. I am able to recover the box by rebooting it and disconnecting my hub from the internet. When the gateway is unable to connect to my server at all it responds to the UDP packet to restore it