Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Solid Line/N = Non-Ambiguous Changes. Dotted line/A = Ambiguous Changes. Bolder solid lines indicate relatively more host shifts within route on the transmission graph. Number in parentheses represents number of shifts within tree from one host to another.
