Hi,
b) someone has dummied up a prefix in a mail header or something (typical) c) there is a bug in the database software (happens) What about d). Perhaps someone temporarily announced routes for unallocated space, setup a mail/spam server in that IP space, sent out
"David R. Conrad" writes: their mail, and stopped exporting the route.
Actually, that was "a", what I call prefix theft. I figure it is becoming more and more common, and I know of at least one case where it was an actual policy of a large network. <CYNICAL> However, this isn't a problem anymore given we have not one, but two proposals on how to authenticate routing announcments. All the rest is just a small matter of programming. </CYNICAL> As an aside, it always amazes me that the Internet even works (particularly for an infrastructure that the unwashed masses seems to think will replace the existing telephone network), but I guess the same could be said of any chaotic (in the non-linear sense) system... Regards, -drc