* Why VoIP is one of the hottest apps in the U.S. federal market
* Survey finds IPv6's awareness and interest lag behind need for new 'Net protocol
* Sprint has been quietly offering IPv6 services for many years
* Verio is one of first top-tier ISP to offer product app that supports IPv6
Source says RBOC sizing up smaller carrier in wake of MCI snub.
* Global Crossing plans to make commercial offering of IPv6 this year
* Global Crossing wants federal business
