> By running DHCPclient on the mobile while the mobile is using CDMA2000
> RAN, one uses PPP to obtain an IP address and DHCPclient to obtain
> other server parameters and one needs to run both the daemons on the
> client to get fully configured. PPP has to happen and then DHCP. For a
> rapidly moving client this may add to some optimization issue.
Actually, the opposite is true. Doing IP configuration down in the link
layer rather than in a single uniform way in the Internet layer would
require hosts to implement a different configuration mechanism for each
link type. As hosts become increasingly multi-homed, this could lead to
interoperability problems, code bloat, and slow handoffs.
Since this question keeps coming up again and again, perhaps we need a
document describing the basic principles. A somewhat sketchy beginning is
available here:
http://www.drizzle.com/~aboba/IAB/draft-iab-config-secure-00.txt
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