Description of problem:

On a Satellite 6 server on RHEL 7, where FIPS was enabled at build time, virt-who fails to update Satellite.

Version-Release number of selected component (if applicable):

virt-who-0.28.10-1.el7_9.noarch
satellite-6.11.4-2.el7sat.noarch
redhat-release-server-7.9-6.el7_9.x86_64

How reproducible:

unclear; only one example so far

Steps to Reproduce:
1. create a RHEL 7 host with FIPS enabled
2. install satellite
3. configure virt-who for a VMware environment
4. check the logs: /var/log/rhsm/rhsm.log, /var/log/foreman-installer/satellite.log, /var/log/secure

Actual results:

The Satellite server doesn't show new hypervisors under Hosts > All Hosts, and subscriptions like RHEL for VDC don't work when applied to guests of hypervisors.

Log entries like these in /var/log/rhsm/rhsm.log:

Nov 30 09:42:07 SERVERNAME /usr/bin/virt-who: 2022-11-30 09:42:07,830 [virtwho.main ERROR] MainProcess(9193):Thread-3 @virt.py:run:416 - Thread 'virt-who-config-2' fails with error: Cannot recv data: FIPS mode initialized#015#012Host key verification failed.: Connection reset by peer
Nov 30 09:42:07 SERVERNAME /usr/bin/virt-who: 2022-11-30 09:42:07,835 [virtwho.main ERROR] MainProcess(9193):Thread-5 @libvirtd.py:_connect:288 - Error in libvirt backend#012libvirtError: Cannot recv data: Value too large for defined data type

Expected results:

The Satellite server should show new hypervisors under Hosts > All Hosts, and subscriptions like RHEL for VDC should work when applied to guests of subscribed hypervisors.

Additional info: