Getting a public ip address for a Linksys WRV200 behind a Verizon fios router/modem.

I did the exact steps outlined in an earlier question (how to setup a router to get a public ip address when it's behind a verizon fios modem/router - https://www.experts-exchange.com/questions/22390536/Configure-Verizon-FiOS-Actiontec-router-MI424-WR-as-bridge.html?anchorAnswerId=18542125#a18542125) except my verizon router has a broadband ethernet connection rather than a coax one (this meant there was no "Privacy" setting...)  I'm using a Linksys WRV200 vpn router (that's why I need the public ip address on the router - for vpn.)  Everything goes as stated (I released the ip, changed it to "No IP", "globe" light is red - etc. -- everything worked just as the solution said) but the Linksys router will not pull an ip address.  I turn it off then on, I click on "renew" - the ip address stays at 0.0.0.0   I have the linksys setup as automatic DHCP on the WAN side, does it need to be PPPOE?  
Thanks for any info...