I have a sierra 320u 3g modem setup on my N66U as the secondary WAN in 'Fail-over' dual-wan mode. Just wondering if i'm doing something wrong here because the Secondary Wan settings always say 'Lease Time:renewing' and 'Lease Expires:expired'. The internet connection is working fine, i'm just wondering what the DHCP Lease issue is here? (if there is one..)