[avahi] Avahi Update-Event?

[Florian Erfurth]

Hi, I want to implement a small tool, which get text from host (IP & 
Service is already known). It should update text too, if the text of 
Service (of host) is changed.
I copied example-source client-browse-services.c from avahi.org. I know 
there are AVAHI_BROWSER_NEW (if new host/service is found) and 
AVAHI_BROWSER_REMOVE (if a host/service is removed. What I need is such 
like: AVAHI_BROWSER_CHANGE.

Idea? Hint?

Thank you!
cu Floh