When an attempt is made to use the rescue disk to rescue a system with many interfaces, "start up network interfaces" is selected to get basic net access going. On eth0 I select DHCP and IPV4, so far so good. On eth1 I deselect DHCP, deselect IPV4 and deselect IPV6, obviously I am not interested in configuring eth1. I select "ok", and I get the message "You must select at least IPV4 or IPV6 support". It is impossible to pass this point without wasting a whole lot of time reconfiguring interfaces, or leaving them set to DHCP and wait forever for the interfaces to not connect to the dhcp server that isn't on the network that isn't connected to the other interfaces.
This has been fixed in rawhide. Marking as a dupe of 228512 since the fix for that bug is the same as for this bug. *** This bug has been marked as a duplicate of 228512 ***