Pekka Savola wrote: > Thanks for looking at the draft, Joe. Inline, > > On Tue, 2 Aug 2005, Joe Touch wrote: > >> It's not clear that this document substantially adds to what is already >> covered in RFC2003 (IPv4 in IPv4), which is (surprisingly) not even >> cited. > > I'm not sure if I understand where you're coming from. RFC 2003 is a > protocol specification. It includes very little discussion or > description of the cases which are the beef of this draft. The closest > thing to this draft in RFC 2003 appears to be section 5.1, but that only > includes very limited discussion of one of the possible options.
RFC2003 is the current Internet standard for IP-IP encapsulation. Sec 5.1 covers the same discussion your document covers with respect to the alternatives of using fragmentation on the inside and outside headers. > RFC 2003 hasn't been cited because there are dozens of mechanisms which > all just can't be cited. It'd be easy to add a reference but that might > be disadvantageous as that might lead the reader to believe that the > list of the references is meant to be conclusive (which it isn't). As the current standard for IPIP tunneling, and the one that already describes the fragmentation impact of tunneling on PMTU, it's directly relevant. Comprehensiveness is not the issue. > However, if it makes you happier, I can certainly add the ref. > >> Additionally, sec 3.4 discusses the 'clear the DF bit' behavior; it is >> worth noting that this violates 2003 sec 3.1, but is what is specified >> in 2401 appendix B.1 (and retained in 2401bis, which is worth citing as >> well). > > Thanks for the pointer; 2401bis section 8 does include interesting > (though relatively brief, for the purposes of this document) material on > this, and I'll do some wordsmithing here (and add a reference to 2401bis). I'm not sure why it's considered brief; I still also don't see what this document adds to what 2003 describes. Joe
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