Lowest TTL

[andreguilhon]

I'm trying to use zeroconf service discovery to register and discover some python services I have. In my POCs, as long as I unregister the services, it gets recognized again whenever I start it up. My main problem and concern right now are that sometimes my devices loses power supply being uncleanly shutdown and thus don't unregister the services in it.
So that leads me to a question: How do I avoid having those stuck services on my service discovery? Is there some way to clear the entries that are not working anymore, so that when a new service is registered with the same info, I get notified?
For example, I could ping my service, and if it didn't respond I would remove it from zeroconf "database". Is there a method for that? Couldn't find one!