[ale] Comcast speeds

Jim Popovitch jimpop at yahoo.com
Thu Mar 29 13:24:19 EDT 2007


On Thu, 2007-03-29 at 12:37 -0400, cfowler wrote:
> Here is an idea.  What happens if you try and steal that IP?  If you are
> assigned a DHCP address and you set as static in your device is their
> DHCP server dumb enough to try and assign another person that address?

I don't think so.  In the past, when Comcast had DHCP probs, I
statically defined my previous IP/subnet/gatway (you do have a hard/soft
copy of yours somewhere, right?) and it worked for a few days until I
remembered to change it back to DHCP.  Even then DHCP still gave me the
same info.

I'm pretty sure that the DHCP server is caching my MAC and assigned IP,
so I will always get the same IP as long as I don't shutdown my router
for 24 or more hours.

> That is the way it works on Ethernet.  Their system may see this and
> simply turn off your connection until you respond to DHCP messages.

Interesting.  I run OpenWRT on the router, and I block DHCP pushes via
iptables.  My DHCP address is only requested by the router every 6 (or
was it 12?) hours.  But, I've only been running OpenWRT for a few weeks,
so I'm not 100% sure that Comcast won't hiccup on this, wrt the DHCP
push blocking, down the road.

-Jim P.




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