[44net] Setting up a tunnel on a Cisco 2921/k9 Router

I am trying to setup a Cisco 2921/K9 router. The router has 3 gigabit ethernet ports and a CISCO EHWIC-4ESG 4-Port Gigabit WAN Interface Cardhttps://www.ebay.com/itm/CISCO-EHWIC-4ESG-4-Port-Gigabit-WAN-Interface-Card/323627581322?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649. I can not get a static IP address from Spectrum so I need to set up a tunnel. Does anyone has have any dealing with this type of setup. I am looking for a way to where to start from. 73's

David A. Pechon Sr. KA5TTZ U.S. Army Retired (SSG/SS) Cell # (985)520-1748 HAMSHACK HOTLINE #4525