(History: This issue was initially directed to vandalism list for lack of a clue. After discussion with User:CaesarB, he recommended that I approach a developer. I hope this is the right method to do that.)
On April 12th, I visited the main page of en.wikipedia.org while not logged on. At the top of the page was notice that "you have messages". When I selected the associated link, I was directed to the page http://en.wikipedia.org/wiki/User_talk:10.0.0.23, upon which was posted a "no more nonsense" warning (which is still there).
I have limited understanding of the IP and wikimedia, but it seemed that this should not happen, since I am external to wiki. To the best of my knowledge, I should have been identified as IP 204.4.13.x (probably IP 204.4.13.72 but this may be shared). Also, the presence of the warning at the 10.0.0.23 user talk page suggests that at least some edits were identified as coming from that address.
CaesarB suggested I approach a developer because, "[...] it might mean a misconfigured Squid proxy on Wikipedia's side [...]".
I'm still fairly new to wiki, so I don't know if this is the right venue to broach such a request or not. If am not in the right place to pursue this, please direct me at the reply address (or at http://en.wikipedia.org/wiki/User_talk:CoyneT).
If this is the right venue, would someone please keep me posted?
Thanks.
Coyne Tibbets
wikitech-l@lists.wikimedia.org