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I was previously unaware of the -v switch. As a result I never got specifics about which interfaces the allowed or dropped applied to. Thought I'd share the wealth...
FYI, -n prevents DNS resolving of IPs.
All output is placed in file SHA1SUMS which you can later check with 'sha1sum --check'. Works on most Linux distros where 'sha1sum' is installed.
All valid files are withheld so only failures show up. No output, all checks good.