Re: [dhcwg] Re: prefix length determination for DHCPv6

[James Woodyatt <jhw at apple.com>]

On Aug 17, 2007, at 6:59 AM, "Templin, Fred L" <Fred.L.Templin at boeing.com 
> wrote:

> > How can that happen with a DHCPv6 host? RA will always precede DHCPv6
> > transactions because unless the host sees an RA with M bit set the
> host
> > will not initiate DHCPv6.
>
> That doesn't make much sense; if a node doesn't hear
> RAs, why wouldn't it try DHCPv6 before giving up?

It seems to me that the semantic content of RA with M=1 is to signal  
to DHCP-capable nodes that no further delay is necessary... DHCP  
discovery can proceed immediately.

One wonders why they would bother waiting in the first place given the  
significant probability that DHCP service is deployed without any RA  
whatsoever.

So, it seems natural to ask... what good is the M bit anyway?

-jhw

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