Hi Lucy, Also, you say:
> [Lucy] RFC2473 is about IPv6 in IPv6, i.e., IPv6 as a delivery network for > IPv6 traffic. but that is not correct. RFC2473 is about "Generic Packet Tunneling in IPv6", which could include encapsulation of IPv4, IPv6, or other network protocols - and not just IPv6 within IPv6 encapsulation. Thanks - Fred [email protected] > -----Original Message----- > From: Int-area [mailto:[email protected]] On Behalf Of Templin, Fred L > Sent: Monday, March 09, 2015 7:52 AM > To: Lucy yong; Ronald Bonica; [email protected] > Subject: Re: [Int-area] comment on draft-ietf-intarea-gre-ipv6 > > > > > -----Original Message----- > > From: Lucy yong [mailto:[email protected]] > > Sent: Sunday, March 08, 2015 10:05 AM > > To: Templin, Fred L; Ronald Bonica; [email protected] > > Subject: RE: [Int-area] comment on draft-ietf-intarea-gre-ipv6 > > > > Hi Templin, > > > > > > > -----Original Message----- > > > From: Int-area [mailto:[email protected]] On Behalf Of Lucy > > > yong > > > Sent: Thursday, March 05, 2015 12:09 PM > > > To: Ronald Bonica; [email protected] > > > Subject: Re: [Int-area] comment on draft-ietf-intarea-gre-ipv6 > > > > > > Hi Ron, > > > > > > RFC2784 has this statement: See [RFC1122] for requirements relating to the > > > delivery of packets over IPv4 networks. > > > Does this apply to over IPv6 networks? > > > > > > Since IPv6 header does not have checksum, if a packet is mis-delivered > > > to GRE decapsulator, will that cause a concern? This is not a concern > > > when IPv4 network is the delivery network. > > > > In terms of header integrity checks, they are very much in the same boat as > > RFC2473. > > But, somehow that got standardized. > > [Lucy] RFC2473 is about IPv6 in IPv6, i.e., IPv6 as a delivery network for > > IPv6 traffic. Since IPv6 packets and upper layer applications > > have to follow RFC2460, i.e., protect the misdelivery and corruption, so > > that is OK if there is only such kind of tunnel in IPv6. GRE-in- > > IPv6 is deferent. They can't be in the same boat. If there are various > > network protocols that are tunneled over a same IPv6 network, > it > > will have a problem due to packet misdelivery and corruption. IMO: the > > draft needs to document these. > > Oh, I thought you were concerned about lack of an integrity check for the > encapsulating > IPv6 header. Are you saying that (in the RFC2473 case at least) it is OK to > omit an integrity > check for the encapsulating IPv6 header as long as there is an integrity > check for the > encapsulated IP header? But, somehow that is not OK for > draft-ietf-intarea-gre-ipv6? > > Thanks - Fred > [email protected] > > > Thanks, > > Lucy > > > > Thanks - Fred > > [email protected] > > > > > Thanks, > > > Lucy > > > > > > > > > -----Original Message----- > > > From: Ronald Bonica [mailto:[email protected]] > > > Sent: Thursday, March 05, 2015 11:57 AM > > > To: [email protected]; Lucy yong > > > Subject: RE: [Int-area] comment on draft-ietf-intarea-gre-ipv6 > > > > > > Hi Lucy, > > > > > > The goal of this draft is *not* to prove the GRE behaves identically > > > with IPv6 as it does with IPv4. In fact, its goal is to point out the > > > differences. > > > > > > Can you think of any differences between the two GRE environments that we > > > have failed to point out? > > > > > > > > > Ron > > > > > > > > > > > > > > Message: 1 > > > > Date: Wed, 4 Mar 2015 15:25:54 +0000 > > > > From: Lucy yong <[email protected]> > > > > To: "[email protected]" <[email protected]> > > > > Subject: [Int-area] comment on draft-ietf-intarea-gre-ipv6 > > > > Message-ID: <2691CE0099834E4A9C5044EEC662BB9D4545BB21@dfweml701- > > > > chm> > > > > Content-Type: text/plain; charset="us-ascii" > > > > > > > > Hi, > > > > > > > > If this draft is to document the protocol of gre in IPv6 exact same > > > > as of gre in > > > > IPv4 and update rfc2784, IMHO, it should point out the gre > > > > application behavior differences in IPv4 network and IPv6 network. > > > > The exact same protocol does not mean the same behavior for an > > > > application since IPv4 and > > > > IPv6 networks have different behaviors such as header checksum. > > > > > > > > Thanks, > > > > Lucy > > > > > > > > > > > > > > > > > > > > > > _______________________________________________ > > > Int-area mailing list > > > [email protected] > > > https://www.ietf.org/mailman/listinfo/int-area > > _______________________________________________ > Int-area mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/int-area _______________________________________________ Int-area mailing list [email protected] https://www.ietf.org/mailman/listinfo/int-area
