Re: [6tisch] [6tisch-security] proposed security text for architecture draft

<yoshihiro.ohba@toshiba.co.jp> Tue, 18 November 2014 07:08 UTC

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From: yoshihiro.ohba@toshiba.co.jp
To: mcr+ietf@sandelman.ca
Thread-Topic: [6tisch-security] [6tisch] proposed security text for architecture draft
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Cc: pthubert@cisco.com, 6tisch@ietf.org, 6tisch-security@ietf.org
Subject: Re: [6tisch] [6tisch-security] proposed security text for architecture draft
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-----Original Message-----
From: 6tisch-security [mailto:6tisch-security-bounces@ietf.org] On Behalf Of Michael Richardson
Sent: Tuesday, November 18, 2014 1:24 PM
To: ohba yoshihiro(大場 義洋 ○RDC□NSL)
Cc: pthubert@cisco.com; 6tisch@ietf.org; 6tisch-security@ietf.org
Subject: Re: [6tisch-security] [6tisch] proposed security text for architecture draft


<yoshihiro.ohba@toshiba.co.jp> wrote:
    > I am not sure if Ethernet and loopback should be considered as LLN
    > interface where mesh routing is needed.  Let's focus on a case with
    > multiple LLN radio interfaces (though such a case seems not very
    > common). 

Take two constrained devices with a generous power supply, wire ethernet between them so that the "signal" can get through that metal door/wall. 
That's the whole point of doing this all at layer 3.

[YO] OK.

    > Is a distinct routable IP address allocated to each of the multiple LLN
    > radio interfaces on a JA?  If so, relay can still work even if there
    > are multiple JNs having the same link-local address accessing via
    > different LLN radio interfaces. 

Assuming that your source route references the correct outgoing link-local address, I agree; I think we can make it work. It might be not to spec, but maybe running code should trump the spec.

[YO] Yes, that's what I meant.

Thanks,
Yoshihiro Ohba


-- 
]               Never tell me the odds!                 | ipv6 mesh networks [ 
]   Michael Richardson, Sandelman Software Works        | network architect  [ 
]     mcr@sandelman.ca  http://www.sandelman.ca/        |   ruby on rails    [