There was/is a similar problem w/ 6.1. My ks.cfg has: network --static -ip XXX.XXX.XXX.XXX ... Last message in A-F3: * kickstarting through device eth0 A dialog stating: 'bad argument to kickstart network command --static: unknown option' appears, preventing my automated install from completing.
The problem is that you are not using the correct syntax. The proper command for static addressing is "network --bootproto static --ip XXX.XXX.XXX.XXX ..."
The problem is mkkickstart generating wrong "network" hint line (with "--static"). See Bug #10622