Re: Clearing DNS cache without rebooting

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Tim via users writes:

Previously, yours was:

hosts:  files mdns4_minimal [NOTFOUND=return] dns myhostname

Which first tries the hosts file, then mdns, then aborts if nothing
found (I believe, going by the comments in the rest of the file).  The

My read of nsswitch.conf's man page is that [NOTFOUND=return] applies to the previous resolver's query's results only.

Capsule summary: a resolver returns either: "found", "not found", or "don't know".

mdns is supposed to resolve .local domains. Therefore this resolver would return "don't know" for regular domain names, but if it's a lookup for .local and it can't resolve it you'll get "not found".

The general idea is that if a .local lookup fails don't even bother doing DNS queries for that. Which does that makes. Now, why this would be broken, that's a different story.

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