But doesn't work if LUN 40 re-triggers

Since he only wants the last one (tail -1), it's easy to fix.

my $target = 0;
my $match;
while (<>) {
   $target = $. + 2 if /^LUN 40\s*$/;
   $match = $_ if $. == $target;
}

print($match) if defined($match);
[download]