[ietf78-tech] Impact of long leases on IPv4 DHCP address ranges for wireless

[Geert Jan de Groot]

On Thu, 8 Jul 2010 18:50:36 -0400 Chris Elliott wrote:
> Are we going to need to expand our v4 DHCP address ranges and probably also 
> our subnet sizes because we are planning on much longer DHCP leases to 
> support authentication?

Perhaps start with a longer prefix (router would be .1, yes?),
and if the pool would run short, remove a bit from the subnet mask
and start assigning from the space we'll then have added.

The advantage being that if the subnet has low polulation, the longer
prefix would also get less background noise from the Internet,
resulting in ARP broadcast traffic.
I remember something like 100-200kbit/sec on our /19 in Kigali and,
like the beacons, they'd be sent slow-speed.

If you guys have a way around this, I'd be very interested,
it's a (growing) concern for AfNOG networks.

GJ