[wplug] The history of DNS.... Resolvers

[Drew from Zhrodague]

	I haven't worked with dnsmasq much, but name resolution is directed by 
/etc/nsswitch.conf, which will list which order the various 
name-resolution bits should be used. Mine at home says this:

hosts:     db files nisplus nis dns

	'files' is the entry that will use /etc/hosts, and I believe 'dns' will 
use /etc/resolv.conf.


		Nice to see some traffic on the list!


> I was recently having problems with my DNS resolving and cn open a web page
> but I could ping any ip address.  This happened after removing the cludgy
> multiboot software.  It left behind "tailings" I'd like to call them.  It
> took me a little time to figure out  that qemu had left behind some virtual
> interfaces.  After I removed them, I regained some connectivity.  However,
> my host name was not resolving.  Apparently, systemd could not resolve any
> dns servers and was not seeing my modem's hostname.home.  So when time
> allowed, Okay, it was pretty obvious that my rig's DNS resolver was not
> configured correctly Duh.  So I began a sojourn, looking to resolvers.
>   through my travails, I installed dnsmasq and disabled sustemd-network.
> Added Open DNS servers to my fios modem, /var/run/NetworkManager/resolv.conf,
> the requisite resolv.conf for dnsmasq and restarted.  Wahla!.  That brings
> me to my question,  How many resolvers are there for linux and how do they
> play/not play together.  I noticed from posts online that users depending
> on their needs us network-manager or dnsmasq or dns-sd (old an apple
> program?)  I'm curious,  anybody?  I'm currently running Linux Mint 18.1 on
> my desktop.


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Drew from Zhrodague