Hey Lamar, long time no talk. On 1/6/2011 10:16 AM, Lamar Owen wrote:
Standards are written by people, of course, and most paragraphs have reasons to be there; I would find it interesting to hear the rationale for a router filling a slot in its neighbor table for a host that doesn't exist. For that matter, I'd like to see a pointer to which standard that says this so I can read the verbiage myself, as that may have enough explanation to satisfy my curiosity.
This actually came up last week in freenode/#ipv6; someone was puzzled why there were FAIL entries showing up in their neighbor table, so I dug into the RFC I found for ND (2461). Turns out, it specifically says entries for failed solicitations SHOULD be deleted. http://tools.ietf.org/html/rfc2461#section-7.3.3 It's the seventh paragraph into that section, including the indented Note. ("Upon entering the PROBE state...") Pardon me if that's the wrong RFC. Jima