Greetings, I'm using a WRVS4400N v2 with latest (released June 2011) firmware from Cisco to gateway between two networks; one is a IPv4 block with a netmask 255.255.255.240 (which works fine), and the LAN side is an internal /16 network running on 18.104.22.168/16 (so, the netmask would be 255.255.0.0). The problem is.. the WRVS4400N won't allow me to set a netmask higher than 255.255.255.0 in the LAN tab. This means that the WAN side can only see 1/250th my internal network! (Well, the internal network isn't really that big, but the machines are more spread out along the available address range than a single /24). I've tried: 1. Upgrading the firmware, hoping Cisco have seen this limitation and fixed it -- no joy. 2. Using a hex editor to change the value in an exported configuration file, and then re-uploading it -- again no joy (it didn't seem to accept the modified configuration; just ignored it without any error message). Is there anything I'm missing that may help make the rest of the LAN accessible to the WAN side? (and vice versa of course). The alternative is moving all computers that need to talk to the WAN side to one LAN /24, but that feels like the wrong thing to do. Many thanks in advance, - Mali.