The shell variable is escaped with a \

save_to_file is used in

kickstart_networking_setup

like this....

<%= save_to_file('/etc/sysconfig/network-scripts/ifcfg-$sanitized_real', ifcfg) %>

Where $sanitized_real is supposed to be a variable name that is evaluated on the target host (set in kickstart_ifcfg_generic_interface) as the properly escaped name of the discovered interface with the specified mac address.

The problem is that the code is rendered as:

cat << EOF-cd4e31fd > /etc/sysconfig/network-scripts/ifcfg-\$sanitized_real

The \ is added to the path by the code path somewhere. This ends up being evaluated to a literal and the file "ifcfg-$sanitzed_real" is written, which doesn't point to an actual interface.

Workaround:
Clone template and replace with something like

cat << EOF >/etc/sysconfig/network-scripts/ifcfg-$sanitized_real
<%= ifcfg %>
EOF