Cloned from https://bugzilla.redhat.com/show_bug.cgi?id=1861724

Description of problem:
Error is shown when interface field are filled in different order.

Version-Release number of selected component (if applicable):
Sat 6.8 snap 10

How reproducible:
Always

Steps to Reproduce:
1. Create domain, and ipv4 subnet with associated domain.
2. Create host -> go directly into interfaces and edit it
3. Firstly fill domain and subnet then type in mac address and click for example into device identifier field. The error below IPv6 address row is shown.
4. It's possible to interface and after filling all other necessary fields also the host is created without error. So it's probably just visual problem.

Actual results:
Below the IPv6 Address row the error is shown: Error generating IP: Bad Request

Expected results:
The error message is not shown.

Additional info:
From my point of view, this is just visual bug.