Re: [PATCH bluetooth-next 2/4] 6lowpan: add nhc module for GHC extension header detection

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Hello.

On 19/09/15 00:14, Alexander Aring wrote:
On Fri, Sep 18, 2015 at 11:44:15PM +0200, Alexander Aring wrote:
Hi,

On Fri, Sep 18, 2015 at 01:52:46PM +0200, Stefan Schmidt wrote:
....

btw:

Something is wrong at iana registration:

https://www.iana.org/assignments/_6lowpan-parameters/_6lowpan-parameters.xhtml#lowpan_nhc

For RFC6282 they did each entry for each extension header, for GHC not.

Don't know why :-(

Also iana says it's

10110EEN whereas RFC7400 says it's 1011EIDN
     ^
     |
     I don't know where this bit comes from.

it isn't wrong, GHC EID is defined for 0-3 only so the first bit is
always zero. So 10110 E E N is right whereas:

1011000N -> Hop
1011001N -> Routing
1011010N -> Fragment
1011011N -> Destination

Seems like Mobility and IPv6 is not defined for GHC.

But I still don't know why iana put it for RFC6282 in a new entry on the
list for each EID and for GHC they did only one entry for the mask without
EID bits.

I guess we could ask them if we really want to know.

regards
Stefan Schmidt

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