Nighthawk M1 DHCP/IP Address

Hi,

I have a nighthawk M1 I'm using at my office and my issue is that I use it as backup of my internet. I have Comcast and very much lose Ethernet. it's quite frequent. My issue is I have computers and security cameras using IP under 10.1.10.XX IP address. They all have static so it doesn't change. I want to be able to setup everything that when my Ethernet fails, I can just simply plug my M1 with Ethernet to the switches and everything is back online rather than delete all cameras and having them to DHCP again with the 192.168.1.XX IP. Is there any way to get the M1 to assign or be used using the 10. IP address. This would make it so seamless for my network to switch when there is an outage. Any help is much appreciated thanks in advance.