My suggested wording is: All edits to Wikipedia are recorded and visible, with the [[IP address]] they are from. Your IP address is publicly visible on edits where you are not [[Special:Userlogin|logged in]]. See [[wikipedia:privacy policy|privacy policy]].
I've just realised that's ambiguous and partly incorrect. How about:
All edits to Wikipedia are publicly visible. Your [[IP address]] is recorded, and it is publicly visible on edits where you are not [[Special:Userlogin|logged in]]. See [[Wikimedia:Privacy policy]].
(BTW, the Wikimedia: interwiki prefix works on meta: but not on en:.)
Better? Easily translatable? An improvement on nothing at all?
- d.