> Ip address from router.

You need to be more specific? You mean your own router? Not the cable
modem? Something running openwrt/lede?

What actually happened to your server? Did it loose its IP address
when the lease expired? Do you have anything in the logs? If not, you
might need to pull the cable out of the cable modem, and see what
happens. Might take a while, depending on how long the lease is.

	Andrew