I've got the Mock replacement server up and running, but my Rio doesn't like it. I've done a network snoop, and here's what I see:

• The RR does a DHCP Discover
• The RR does an ARP request for one of those Microsoft IP addresses
• My DHCP server sends a DHCP Offer to the RR
• The RR makes a DHCP request to the DHCP server
• The RR broadcasts what seems to be an SSDP request with its new IP address (even though DHCP negotiations haven't finished)
• The DHCP server makes an ARP request for the RR's IP address
• The DHCP server ACKs the DHCP Request
• The RR responds to the DHCP server's ARP request
• The mock server responds to the SSDP request
• The RR makes an ARP request for the DHCP server/mock server
• Server responds to ARP request
• NFS ensues for about 2.5 seconds worth of traffic
• There's a pause of about 3.5 seconds
• RR makes ARP request for server
• Server responds to ARP request
• NFS ensues for about 5 seconds
• There's a pause of about 6 seconds
• This procedure starts over

During this, at the front panel of the Receiver, it shows ``Searching for music server'' for about 5 seconds, then ``Found music server'' for about another 5 seconds, then it's blank for about 4 seconds, then it starts over.

None of the traffic looks bad, and it never gets to doing anything beyond DHCP, ARP, SSDP, and NFS.

The server is the DHCP, SSDP, and NFS server. It's an OpenBSD machine. It serves NFS shares, including the Receiver share, just fine to other machines.

Any ideas? Should I crack the unit open and see if I can get a serial console?