Block for VIA headers

I’ve deviced a block that will block many proxy servers. Not all, but many. Problem is, it also blocks regular people who use a proxy as part of their ISP setup.

This block could be useful for dropping in during a prolonged comment spam run, like the one I had yesterday.

But Spam Karma would probably do a better job. Or even the built in blacklist in WP!

So, given the disclaimers, and warnings, here it is:

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