Fixed issue with IPv6 users being routed to the EU region

At this time the Pipe platform supports only IPv4, however, the CDN part of the platform had IPv6 enabled until now, which led to cases where a US user connected to the Internet through IPv6 would be directed to the EU region. Such connections defaulted to the EU region if the region setting on the Pipe account was set to Auto-detect.

To fix this issue, we've disabled IPv6 on the CDN.