Andrei Popescu wrote: > Tom H wrote: > > > # grep hosts /etc/nsswitch.conf > > > hosts: files mdns4_minimal [NOTFOUND=return] dns mdns4 > > ... > > "dns" isn't being queried because you've got avahi installed and so > > when it's queried through "mdns4_minimal" and the host's ip isn't > > found, it's returning instead of the default "NOTFOUND=continue". > > > > Delete "[NOTFOUND=return]" and try a "host ..." or a "dig ...". > > I don't agree: > ... > $ grep hosts /etc/nsswitch.conf > hosts: files mdns4_minimal [NOTFOUND=return] dns mdns4 > ... > ii libnss-mdns 0.10-3.1 NSS module for Multicast DNS name resolution > ... > but DNS works fine. As far as I recall mdns is only used for the .local > domain.
I have had inconsistent behavior in that configuration. Some systems behave fine with the mdns configuration. But others have really odd and problematic DNS lookup behavior. I haven't concluded to root cause other than to say that if libnss-mdns is removed (or the nsswitch.conf file modified / cleaned) then the problems stop. And so when I run into the problem the easy solution is to remove libnss-mdns or clean nsswitch.conf to make the problem stop. I will confirm that the problem is not limited to .local domains. When the problem exists it occurs with domains other than .local domains. If I can recreate the problem on a non-critical machine then I will look more deeply into the problem. I would like to understand it better. Bob
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