Anurag Uxa wrote: > Dear Mr. Tony and all > > I have two queries . Can you pls give me the details. and > tell me about some usefull document . > > Questions: > 1. > HOST1 and HOST2 are in different networks and having IPv6 > addresses HOST1 send one tunneled IPV4 packet <Encapsulated > IPV6 UDP packet> to the HOST2 > (Before sending the tunneled packet out, Will the > HOST1 send tunneled mulitcast NS to HOST2 ?<For Reachability > Confirmation>)
No, there is no need for NS because the necessary 'link' reachability information is already imbedded in the IPv6 address. > > 2. > Is Automatic tunnels always unidirectional or only for > following condition [Neighbor Discovery and Stateless Address > Autoconfiguration] ? Yes they are always unidirectional. > > P.S: RFC-2893 > Automatic tunnels and unidirectional configured tunnels are > considered to be unidirectional. Thus the only aspects of Neighbor > > Discovery [7] and Stateless Address Autoconfiguration [5] > that apply to these tunnels is the formation of the > link-local address. Don't spend too much time on 2893 type automatic tunnels. The replacement http://www.ietf.org/internet-drafts/draft-ietf-ngtrans-mech-v2-00.txt has removed them for lack of ability to scale well. Spend more time on RFC 3056, http://www.ietf.org/internet-drafts/draft-ietf-ngtrans-isatap-04.txt, & http://www.ietf.org/internet-drafts/draft-ietf-ngtrans-shipworm-08.txt Tony > > > > > > Thanks > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > IF U FIND SOME ONE WITHOUT A SMILE,GIVE ONE OF YOUR'S > > Anurag Uxa > IWave Embedded systems > Bangalore > ph.6786243/5 extn :210 > > > > DISCLAIMER: > > This e-mail and any attachment (s) is for authorised use by > the intended recipient (s) only. It may contain proprietary > material, confidential information and/or be subject to the > legal privilege of iWave Systems Technologies Private > Limited. If you have received this message in error, please > notify the originator immediately. If you are not the > intended recipient, you are notified that you are strictly > prohibited from retaining, using, copying, alerting or > disclosing the content of this message. Thank you for your > co-operation. > -------------------------------------------------------------------- > IETF IPng Working Group Mailing List > IPng Home Page: http://playground.sun.com/ipng > FTP archive: ftp://playground.sun.com/pub/ipng > Direct all administrative requests to [EMAIL PROTECTED] > -------------------------------------------------------------------- > -------------------------------------------------------------------- IETF IPng Working Group Mailing List IPng Home Page: http://playground.sun.com/ipng FTP archive: ftp://playground.sun.com/pub/ipng Direct all administrative requests to [EMAIL PROTECTED] --------------------------------------------------------------------
