Docker login is failing with an odd error

Solution In Progress - Updated -

Issue

Attempting to docker login from Quay results in an odd error message:

$ docker login https://your_quay_domain_name
Username (username):
2014/01/01 12:00:00 Error: Invalid Registry endpoint: Get https://your_quay_domain_name/v1/_ping: dial tcp: ping timeout

Environment

Red Hat Quay Enterprise

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