Hello all,
I'm currently implementing a 6LoWPAN-stack and I have few questions
about draft-ietf-6lowpan-nd-15.
1.) I'm not quite sure, which address has to be set in the Target
Address field of the Neighbor Solicitation message a hosts sends to a
router.
Do I have to set the address, the host is about to register, in this field?
If it has to be that way, does the router register the source address of
the IP header or the target address of the Neighbor Solicitation?
2.) How do the flags in a Neighbor Advertisement have to be handled?
I guess a router will set the R (router) flag, if it sends a NA + ARO to
a host.
But will it set the S (solicited) or the O (override) flag? Or do the
hosts don't care about them anyway?
3.) Do hosts have to proccess unicast Neighbor Solicitations and respond
with Neighbor Advertisements, if they're not sleeping.
4.) If a router gets a packet destined to one of its registered hosts,
does it always have to cache the packets until this host re-registers
its address to the router? Or is there any way to let the router check,
whether the host is awake and forward the packet immediately? Maybe send
a unicast NS?
Greetings
Jan
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Jan Kramer Coalesenses GmbH
Phone: +49 451 883695-14 Maria-Goeppert-Str. 1
23562 Lübeck
[email protected] www.coalesenses.com Germany
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Sitz/Registered office: Lübeck
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