New ZeroConf Spec

Ian Jackson ian at
Wed Jul 12 17:12:04 BST 2006

Scott James Remnant writes ("Re: New ZeroConf Spec"):
> Not really; even if you use decent filtering, it's still boringly easy
> to forge UDP packets and inject them into the listening application --
> there being no sequence number, etc. in the UDP header.

We were discussing DNS.  DNS packets have a 16-bit id field which must
be replicated in the response.  However, not all implementations set
it randomly (mine doesn't, for example!) so you must protect your
resolver from forged responses.


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