Cloned from https://bugzilla.redhat.com/show_bug.cgi?id=1979907

Description of problem:
IPv6 fact from Subscription Manager is not being parsed for foreman hosts.

How reproducible:
- Always

Steps to Reproduce:
1. Register a content host with satellite
2. Go to Hosts > All Hosts > Click on hostname
3. Go to NICs section

Actual results:
- IPv6 Address is empty.

Expected results:
- IPv6 Address is present.

Additional info: