Description of problem: There's a bug in /usr/bin/system-control-network, specifically around line 940 of /usr/share/system-config-network/netconfpkg/NC_functions.py where a function reference (getRoot) is passed to the % string formatter operator instead of the return value of said function. Version-Release number of selected component (if applicable): system-config-network-tui 1.4.3-1
Created attachment 243371 [details] Proposed patch
Works for me