Phoenix Channels and IPv6

I changed my endpoint config from :inet6 to :inet4 in order to get websockets working when deployed to Pivotal Cloud Foundry based on an answer from this thread: Deploying Phoenix App on cloud foundry.

That worked great. However, it took me forever to figure out, so I’d love to get whatever changes are necessary into PCF in order to support the default inet6 option, but right now I’m not really sure where to start.

I was wondering if anyone could point me towards more information on how ipv6 ( assume that’s what that setting is?) interacts with websockets?