Stealth Crawler from HP

Something stealth came crawling from HP, perhaps it's part of that PlanetLab fiasco, asked for 11 pages and 3 images, very bizarre behavior.

Asked for the 'about' page 3 times, robots.txt 2 times, index 2 times, and the privacy page, so definitely not a human and not a terribly clever bot either.

192.6.19.203 - "GET /robots.txt " "-" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)"
192.6.19.203 - "GET / " "-" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)"

Reverse DNS says:

nslookup 192.6.19.203
name = cache2.nlanr.hpl.hp.com

What's up HP, mind sharing your intentions with this activity?