Add dependencies and listen to any interface

README.md

@@ -4,7 +4,8 @@ audible feedback on just how much your browsing feeds into google
 By bert@hubertnet.nl / https://berthub.eu/
 
 ## How to compile
-First install libpcaudio (libpcaudio-dev), then:
+
+First install libpcaudio (libpcaudio-dev) and build tools (cmake, build-essential), then:
 
 ```
 cmake .
@@ -14,7 +15,7 @@ make
 ## How to run:
 
 ```
-sudo tcpdump -n -l dst net 192.0.2.1/32 $(for a in $(cat goog-prefixes.txt); do echo or dst net $a; done)  |  ./teller 
+sudo tcpdump -i any -n -l dst net 192.0.2.1/32 $(for a in $(cat goog-prefixes.txt); do echo or dst net $a; done) |  ./teller
 ```
 
 And then cry.