$rh->cmd('show interfaces xe-1/3/1 | match "Hardware address" '); my $output = $rh->get_response; my @outputlist = split /\n/, $output; foreach my $item (@outputlist) { $item =~ /($dd([:-])$dd(\2$dd){4})/o; print "mac address is $1\n"; my @mac_add = split(/:/, $1 ); print "at mac is @mac_add\n"; my $mac_R5 = join(".", @mac_add); print " final mac is $mac_R5\n";