Yes, all of the VIP receivers have a working network jack. I haven't looked at my 625 since I unplugged it, but I don't believe it has a network jack at all. Of course it's not a VIP-series DVR.
Pop quiz #1: what's the diff between a VIP211 and a 411?
Answer: the 411 has no network jack.
Pop quiz #2: what does "VIP" stand for?
Answer: Video over IP.
BTW - if I'm in error, please correct me so I can correct this post.