I have an 871 router I am redeploying. I did a factory reset on it and just to make sure it was clean I deleted the vlan.dat file from flash. I reconfigured the router and noticed DHCP is not working. DHCP seems to be fine but when I look in flash there is no vlan.dat file. I expected it to be recreated with I re-created my VLAN. Is there a way to recreate this?