On 09/01/2018 06:09, Michael Richardson wrote:
>
> Mirja Kuehlewind (IETF) <i...@kuehlewind.net> wrote:
> >> Am 05.01.2018 um 23:30 schrieb Michael Richardson
> <mcr+i...@sandelman.ca>:
> >>
> >>
> >> Mirja Kühlewind <i...@kuehlewind.net> wrote:
> >>> "DNS naming is set up to provide the ACP IPv6 address of network
> >>> devices. Unbeknownst to the application, MPTCP is used. MPTCP
> >>> mutually discovers between the NOC and network device the data-plane
> >>> address and caries all traffic across it when that MPTCP subflow
> >>> across the data-plane can be built."
> >>
> >> Section 2.1.5 is discussion, it discusses ways in which the
> >> anticipated low performance (compared to what the box might do with its
> >> hardware accelerated forwarding).
> >>
> >> If we have an application that needs the bandwidth of the native
> hardware,
> >> the connection can be initated over the ACP (that's what would be in
> DNS).
> >> One presumes that an MPTCP layer could then enumerate the available
> IPs at
> >> each end and then start off additional flows on the other destinations.
>
> > MPTCP adda an additional TCP flow but for the application that still
> > looks like one flow. As I said I’m not sure if that is what you want.
>
> I think that this might be exactly what the application might want.
> As stable-connectivity doesn't detail the requirements of the application,
> the point of this section is to point out that the bandwidth limitations of
> the ACP need not be a constraint when the network is healthy.
But that ducks the security issue. I don't think that's OK. Since the ACP
secures connections *below* TCP and MPTCP allows paths that bypass the ACP,
this is a security hole you can drive a large truck through.
Brian
>
> If you feel that 2.1.5 doesn't explain this well, then please say so.
>
> --
> ] Never tell me the odds! | ipv6 mesh networks [
> ] Michael Richardson, Sandelman Software Works | network architect [
> ] m...@sandelman.ca http://www.sandelman.ca/ | ruby on rails
> [
>
>
>
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