I am currently trying to get the IP of the requested user. The problem is the IP is returning ::ffff:127.0.0.1 instead of 127.0.0.1. I tried using
::ffff:127.0.0.1
127.0.0.1
I was having issues with the trying to compare ipv4 mapped addresses, and found the ipaddr.js library helpful :-)
eg
_.isEqual(ipaddr.process('::ffff:127.0.0.1'), ipaddr.process('127.0.0.1')) === true