Re: [Anima-bootstrap] M_FLOOD and mDNS (was Re: Anima bootstrap: discover protocol multicast notes)
Michael Richardson <mcr+ietf@sandelman.ca> Wed, 15 February 2017 16:04 UTC
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Date: Wed, 15 Feb 2017 10:59:34 -0500
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Cc: anima-bootstrap@ietf.org, Toerless Eckert <tte@cs.fau.de>
Subject: Re: [Anima-bootstrap] M_FLOOD and mDNS (was Re: Anima bootstrap: discover protocol multicast notes)
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peter van der Stok <stokcons@xs4all.nl> wrote: > discovery functions may be used. I like to point out mDNS due to its > long-standing existence. okay. I also prefer not to re-invent everything. > <pvds> The beginning of section 8 says: " Whenever a Multicast DNS > responder starts up, wakes up from sleep, receives an indication of a > network interface "Link Change" event, or has any other reason to > believe that its network connectivity may have changed in some > relevant way, it MUST perform the two startup steps below: Probing > (Section 8.1) and Announcing (Section 8.3). " Much of the text of Yes, that's the case on the first interval. Once it's none that, it's not supposed to be proactively announce itself again, from what I understand. It's a service, so it doesn't to defend it's name. > rfc6762 is about suppressing superfluous traffic. The method relies > on repetitive querying and reactive responding, with a response at > responder re-activation (see above). There is a lot of operational > experience here, and deserves attention. </pvds> Okay, but would this be a valid implementation: unsigned char stuff[]={ 0x01,0x02, /* encoded DNS-SD reply */ while(true) { sleep(60); sendmsg(stuff, multicast-address, port-5353); } ? >> It might be that in the end we don't care about the anonimity of the >> pledge. > <pvds> Did we? IMO, almost impossible in an unsecured bootstrapping > network. Once keys are distributed, pledge looses it identity and > starts afresh (I reckoned) </pvds> Okay, *DO YOU* care about anonimity of the pledge? Do *YOU* care if the pledge must solicit a Join Proxy by multicasting a query? >> If the pledge can ask the network about Join Proxy, then there is >> nothing to stop us from using mDNS here. > <pvds> Or anything else dependent on the operational environment of > the SDO using the bootstrapping protocol. </pvds> Agreed. What would you like to chose here? Tell us your opinion. Don't be shy. -- Michael Richardson <mcr+IETF@sandelman.ca>, Sandelman Software Works -= IPv6 IoT consulting =-
- [Anima-bootstrap] Anima bootstrap: discover proto… Toerless Eckert
- Re: [Anima-bootstrap] Anima bootstrap: discover p… Toerless Eckert
- Re: [Anima-bootstrap] Anima bootstrap: discover p… Brian E Carpenter
- Re: [Anima-bootstrap] Anima bootstrap: discover p… Michael Richardson
- Re: [Anima-bootstrap] Anima bootstrap: discover p… Michael Richardson
- Re: [Anima-bootstrap] Anima bootstrap: discover p… Brian E Carpenter
- Re: [Anima-bootstrap] Anima bootstrap: discover p… peter van der Stok
- [Anima-bootstrap] M_FLOOD and mDNS (was Re: Anima… Michael Richardson
- Re: [Anima-bootstrap] M_FLOOD and mDNS (was Re: A… Brian E Carpenter
- Re: [Anima-bootstrap] M_FLOOD and mDNS (was Re: A… Michael Richardson
- Re: [Anima-bootstrap] M_FLOOD and mDNS (was Re: A… peter van der Stok
- Re: [Anima-bootstrap] M_FLOOD and mDNS (was Re: A… Michael Richardson
- Re: [Anima-bootstrap] M_FLOOD and mDNS (was Re: A… Brian E Carpenter
- Re: [Anima-bootstrap] M_FLOOD and mDNS (was Re: A… peter van der Stok
- Re: [Anima-bootstrap] M_FLOOD and mDNS (was Re: A… peter van der Stok
- Re: [Anima-bootstrap] M_FLOOD and mDNS (was Re: A… Michael Richardson
- Re: [Anima-bootstrap] M_FLOOD and mDNS (was Re: A… peter van der Stok
- Re: [Anima-bootstrap] M_FLOOD and mDNS (was Re: A… Michael Richardson