for a in `ip -6 a s | grep inet6 | cut -d / -f 1 | awk '{print $2}'`; do h=`host $a |grep -w "domain name pointer" | awk '{print $5}'|sed -r 's/\.$//'`; if [ "X$h" != "X" ]; then echo -en "$a\t\t$h\n"; fi;done