Dumb me.  Green Mill Pizza!  They have one in St. Louis Park.  The 
orignal is on Grand Ave and Dale (I think, can't remember for sure).
It's not within walking distance but, they have SUPERB dieep dish, 
some are definately veggie.  They are (well they used to be) really, 
really good.

Again a car is a necessity from downtown Mpls. It's on the St. Paul
side of the river.

Exactly where is the IETF being held?

Paul