ip address for running jails determined via jexec ifconfig and for stopped jails via jail rc.conf
trim multiline output in case additional lines included in fstab
the new option -a lists all jails, show state 'Up' or 'Down', published ports (rdr) and release, used command jls -j <jail> to collect infos for active jails and the files jail.conf, rdr.conf for inactive jails