It looks like knetworkconf 3.5.9 is not compatible with openrc. It writes to the /etc/conf.d/net file but it uses the old baselayout-1 syntax with bash arrays. Can knetworkconf be patched and/or should upstream be notified of the baselayout-2/openrc change?
Write to /etc/conf.d/net with out () for bash arrays and instead use the new openrc style.
Writes to /etc/conf.net with the old baselayout-1 style.
Monolithic ebuilds are going to be dropped really soon, so i won't fix this.