Comment 4 for bug 1755587

Actually, nevermind, I just confirmed this bug and there was no error log at all.

This would seem like a fallout of the UI.

How I reproduced:

1. had fabric-5 w/ subnet 192.168.122.2
2. created fabric 'local' and tried to update the subnet to change it to the different fabric.
3. Saving continued, but it didn't update anything.

I've confirmed this with 2.4