[clue-tech] DNS lookups take a looooooong time SOLVED!

[Nate Duehr]

> Ah.. You shouldn't have to spoof your MAC address.  This situation can

He shouldn't have to spoof at all, and spoofing a MAC address
shouldn't have any effect on performance at all.  I'm still trying to
figure out how a Layer 2 addressing change can speed up a Layer 3
protocol.  Very skeptical here... something else was going on that
wasn't seen/understood.

Any "Comcastic" folks lurking that want to explain how a network
design could be so dumb as to route DNS Layer 3 packets slower if they
come from the so-called "wrong" MAC address?

Is this an artifact of some kind of QoS setup that's trained to slow
down service for anyone not sending their "registered' MAC address?
Or perhaps STP (spanning-tree protocol) was turned on/off somewhere it
should/shouldn't have been and a port was confused about where it was
hearing the PC's MAC address coming from -- Layer 2 loop fighting with
STP?

Of course, I'm an old curmudgeon and find filters and/or QoS based on
Layer 2 to be utterly retarded of the ISP to implement anyway.
Obviously if a SOHO router can spoof a MAC address automatically at
the click of a checkbox, whatever's really causing the speed issue is
utterly and completely bypassed by people smart enough to code SOHO
routers with the ability.

Any machine has the ability to spoof a MAC address nowadays.

(For the same reason, MAC filtering for "security" on wireless
networks is pretty dumb... anyone smart enough to attempt to crack WEP
or similar to get on a wireless network surely knows how to find a MAC
address of an already active machine on that wireless network and
hijack it.)

All these silly games ISP's play are just layers of complexity added
that add no real value to the service.  Thank goodness I have a
clueful ISP that doesn't play games like that!

Nate