Re: Limiting the size of the IPv6 header chain (draft-ietf-6man-oversized-header-chain)

On 15/06/2013 04:23, Ray Hunter wrote: ... > What about nested Generic Packet Tunneling in IPv6 [rfc2473]? > > That'll add another 48 octets per nesting level. [fresh IPv6 tunnel > header + destination options including IPv6 Tunnel Hop Limit] > > On the one hand I can see they'll be really useful

Re: Limiting the size of the IPv6 header chain (draft-ietf-6man-oversized-header-chain)

Ray, On 15/06/2013 01:25, Ray Hunter wrote: ... > > I've come across a couple of problematic standardised options already > defined that don't appear to have individual length limits below the > overall generic limit of 256 octets per option (derived from the "Opt > Data Len" field being 1 octet)

Re: Limiting the size of the IPv6 header chain (draft-ietf-6man-oversized-header-chain)

> Tom Taylor > 14 June 2013 17:06 > > Best answer I can see is that the limit applies except for routers > supporting specific features. Corollary is that not all routers will > do so, and people defining such features should be aware of that. > > Tom Taylor > Ray

Re: Limiting the size of the IPv6 header chain (draft-ietf-6man-oversized-header-chain)

On 14/06/2013 10:21 AM, Ray Hunter wrote: Tom Taylor 14 June 2013 15:58 On 14/06/2013 9:25 AM, Ray Hunter wrote: ... I've been trawling through various standards trying to identify sane extension header combinations myself. I've come across a couple of pro

Re: Limiting the size of the IPv6 header chain (draft-ietf-6man-oversized-header-chain)

> Tom Taylor > 14 June 2013 15:58 > On 14/06/2013 9:25 AM, Ray Hunter wrote: >> > ... > >> I've been trawling through various standards trying to identify sane >> extension header combinations myself. >> >> I've come across a couple of problematic standardised opt

Re: Limiting the size of the IPv6 header chain (draft-ietf-6man-oversized-header-chain)

On 14/06/2013 9:25 AM, Ray Hunter wrote: ... I've been trawling through various standards trying to identify sane extension header combinations myself. I've come across a couple of problematic standardised options already defined that don't appear to have individual length limits below the o

Re: Re: Limiting the size of the IPv6 header chain (draft-ietf-6man-oversized-header-chain)

Sander Steffann wrote: > Hi, > >> My question to th wg is: >> >> 1) Do we want to limit the size of the IPv6 header chain? > > I think it is necessary yes. > >> 2) If so, which limit should we pick? > > I think there are two conditions here: > - The full layer-4 header must be within this limit,

Re: [v6ops] [6MAN] Re: Limiting the size of the IPv6 header chain (draft-ietf-6man-oversized-header-chain)

In message <6fae3df4-b5b4-4f21-9098-761523745...@kumari.net>, Warren Kumari writes: > > On Jun 12, 2013, at 2:44 PM, Robert Elz wrote: > > > Date:Wed, 12 Jun 2013 19:49:08 +0200 > > From:Gert Doering > > Message-ID: <20130612174908.gt2...@space.net> > > = > > > | Loop

Re: Re: Limiting the size of the IPv6 header chain (draft-ietf-6man-oversized-header-chain)

Brian E Carpenter wrote: > On 12/06/2013 11:58, Sander Steffann wrote: >> Hi, >> >>> My question to th wg is: >>> >>> 1) Do we want to limit the size of the IPv6 header chain? >> I think it is necessary yes. >> >>> 2) If so, which limit should we pick? >> I think there are two conditions here: >>

Re: Limiting the size of the IPv6 header chain (draft-ietf-6man-oversized-header-chain)

On 12/06/2013 11:58, Sander Steffann wrote: > Hi, > >> My question to th wg is: >> >> 1) Do we want to limit the size of the IPv6 header chain? > > I think it is necessary yes. > >> 2) If so, which limit should we pick? > > I think there are two conditions here: > - The full layer-4 header must

Re: Limiting the size of the IPv6 header chain (draft-ietf-6man-oversized-header-chain)

On 06/12/2013 02:37 AM, Mark Andrews wrote: > The obvious limit is no re-assembly required to find the L4 header. That's already in draft-ietf-6man-oersized-header-chain > As for fragments not containing enough information create a new > fragement header code and copy more of the existing heade

Re: Limiting the size of the IPv6 header chain (draft-ietf-6man-oversized-header-chain)

The obvious limit is no re-assembly required to find the L4 header. As for fragments not containing enough information create a new fragement header code and copy more of the existing headers. Use ICMPv6 Parameter Problem as a signal to switch back to the old fragmentation header. Mark -- Mark

Re: Limiting the size of the IPv6 header chain (draft-ietf-6man-oversized-header-chain)

Hi, > My question to th wg is: > > 1) Do we want to limit the size of the IPv6 header chain? I think it is necessary yes. > 2) If so, which limit should we pick? I think there are two conditions here: - The full layer-4 header must be within this limit, and it must be in the first fragment (i

Re: Limiting the size of the IPv6 header chain (draft-ietf-6man-oversized-header-chain)

On Jun 10, 2013 8:56 PM, "Brian E Carpenter" wrote: > > On 11/06/2013 15:44, cb.list6 wrote: > > On Jun 10, 2013 8:34 PM, "Brian E Carpenter" < brian.e.carpen...@gmail.com> > > wrote: > >> On 11/06/2013 15:21, cb.list6 wrote: > >>> On Jun 10, 2013 7:23 PM, "Fernando Gont" wrote: > Folks, > >

Re: Limiting the size of the IPv6 header chain (draft-ietf-6man-oversized-header-chain)

On 11/06/2013 15:44, cb.list6 wrote: > On Jun 10, 2013 8:34 PM, "Brian E Carpenter" > wrote: >> On 11/06/2013 15:21, cb.list6 wrote: >>> On Jun 10, 2013 7:23 PM, "Fernando Gont" wrote: Folks, We're currently editing the aforementioned I-D. So far, the I-D just required that th

Re: Limiting the size of the IPv6 header chain (draft-ietf-6man-oversized-header-chain)

On Jun 10, 2013 8:34 PM, "Brian E Carpenter" wrote: > > On 11/06/2013 15:21, cb.list6 wrote: > > On Jun 10, 2013 7:23 PM, "Fernando Gont" wrote: > >> Folks, > >> > >> We're currently editing the aforementioned I-D. So far, the I-D just > >> required that the entire IPv6 header chain be present in

Re: Limiting the size of the IPv6 header chain (draft-ietf-6man-oversized-header-chain)

On 11/06/2013 15:21, cb.list6 wrote: > On Jun 10, 2013 7:23 PM, "Fernando Gont" wrote: >> Folks, >> >> We're currently editing the aforementioned I-D. So far, the I-D just >> required that the entire IPv6 header chain be present in the first > fragment. >> Based on recent/ongoing discussions on th

Re: Limiting the size of the IPv6 header chain (draft-ietf-6man-oversized-header-chain)

On Jun 10, 2013 7:23 PM, "Fernando Gont" wrote: > > Folks, > > We're currently editing the aforementioned I-D. So far, the I-D just > required that the entire IPv6 header chain be present in the first fragment. > > Based on recent/ongoing discussions on the 6man and v6ops lists, there > seems to b