a) refer 'perl' in their Makefile, or
b) have a directory name of p5-*, or
c) have any dependency on any p5-* package
Like last time, where this caused no complaints.
- Strip output added by modern tcpdump versions in verbose mode from
input lines (IP options, tcp checksum status).
- Split sack ranges on consecutive spaces instead of just a single space.
While here use a string comparison operator to compare second filed against
"IP" by copying the code from graphics/xplot patch-ab.