Fernando, Please see inline: ________________________________
Hi, folks, I have a few questions on Teredo on which I hope you can shed some light: 1) The Teredo overview published by Microsoft (http://technet.microsoft.com/en-us/library/bb457011(printer).aspx) suggests that a bubble packet is used to maintain the NAT mapping with the Teredo server. A couple of questions on this one: 1a) Is the Teredo server supposed to respond with a Teredo bubble, or what? #Poorna# Well, 2.8 of RFC 4380 does say bubbles are used to create a NAT mapping, but this with regards to establishing communication to a peer. Teredo server will respond with a bubble if it receives one as long as it conforms to section 5.3.1. 1b) According to RFC 4380, RS/RA messages are used for that purpose. Is there any specific reason for which this was changed (from "bubble" to "RS/RA") at some point, or is the "Teredo Overview" published by MS simply wrong? #Poorna# Agreed. It is misleading and we will fix the documentation. 2) Assuming RS/RA messages are used for maintaining the NAT mapping: 2a) Are Teredo clients supposed to process the received RAs? (e.g., process the "Router Lifetime", the Prefix Information Option, etc.) #Poorna# Yes, Teredo clients must process the RA packets. 2b) Do you know of any implementations that actually process them? #Poorna# Windows(XP SP1 (with advanced networking pack) onwards) implementations of Teredo processes the RS/RA packets. Thanks so much! Kind regards, -- Fernando Gont e-mail: fernando at gont.com.ar || fgont at acm.org PGP Fingerprint: 7809 84F5 322E 45C7 F1C9 3945 96EE A9EF D076 FFF1
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