The 'make it do it automatically upon pxe boot' incantation
./add_install_client -d -s 207.7.108.10:/export/home/jumpstart -c 207.7.108.10:/export/home/jumpstart/Solaris_11_snv_31/boot -p 207.7.108.10:/export/home/jumpstart -b "console=ttya" SUNW.i86pc i86pc