Description of problem:

When I have IPv6 stack disabled, Satellite-installer says this and stops:

2024-11-26 09:34:51 [NOTICE] [root] Loading installer configuration. This will take some time.
2024-11-26 09:34:57 [NOTICE] [root] Running installer with log based terminal output at level NOTICE.
2024-11-26 09:34:57 [NOTICE] [root] Use -l to set the terminal output log level to ERROR, WARN, NOTICE, INFO, or DEBUG. See --full-help for definitions.
The kernel contains ipv6.disable=1 which is known to break installation and upgrade.
Remove and reboot before continuining.
Your system does not meet configuration criteria 

This KB article states that on Satellite and Capsule, ipv6 must not be disabled in kernel and that at least a loopback must be present: https://access.redhat.com/solutions/8709

1) I think it shouldn't be required for an IPv4-only Satellite to have anything IPv6 related - we should require the minimum of things that are necessary

2) If it really needs to be required, it should be properly documented in the Installation guide, not just a KB article

How reproducible:

Deterministic

Is this issue a regression from an earlier version:

Steps to Reproduce:

Follow steps for "Disable the IPv6 protocol" here https://access.redhat.com/solutions/8709 and then try to install the Satellite

Actual behavior:

Above mentioned message and the installation stops

Expected behavior:

Preferably don't require IPv6. If we have to, document it properly.{}