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[Italian Plumber]

My DIR-655 is losing the lease that it gets from the modem, at random times.  It seems to only do it when I'm not at home.  I know because I'm accessing things remotely (Remote desktop, SSH, etc)... but it doesn't always lose the lease at the moments that I'm connected. 

My DI-524 did not have this problem, and was set up the same way.

Any pointers would be greatly appreciated.  

[Mlachake]

What IP address is the router receiving from the modem? Is is it a private IP or public IP from your service provider? Either way, the router does not determine when to release the IP and renew (WAN IP). This has more do with the modem and your service provider. Please verify with your service provider as to what their policy is regarding WAN IP assignments.

[Italian Plumber]

Thanks for your suggestions.

The router is getting a public IP -- same one the old router did, of course -- because the modem is set to "IP Passthrough" for the device (the router).  Without that setting on the modem, the router gets 192.168.1.97. (and virtual server functions do not work).

The modem/service is Bellsouth/AT&T FastAccess DSL.  The modem essentially wants to act as a router when it doesn't really have to, and you have to use this "IP Passthrough" feature to bypass that and use your own router.  This functioned perfectly under the DI-524, which is what leads me to believe that the ISP/modem is not the issue.

I believe I've done an okay workaround -- I'm just using the same network settings on the static IP option.  I tried this before but it didn't work well, I believe because I was using the wrong DNS settings.  It seems to be working fine now -- except that now the QoS Engine doesn't seem to be doing its job.

This router might very well be headed back to DLink.