If "libnss-nm-dns" would make it easier to introduce per-user caching
and/or if it improved security then those would be important benefits.
Currently nm-dnsmasq has caching disabled because of concerns about
cache poisoning and information leakage.
https://blueprints.launchpad.net/ubuntu/+spec/foundations-p-dns-
resolving
If there have already been discussions of per-user caching in Ubuntu
then someone please give me the link.
The only approach that I have seen so far is per-user nscd in Solaris
and (I now see) FreeBSD.
http://docs.oracle.com/cd/E19963-01/html/821-1462/nscd-1m.html
http://www.unix.com/man-page/freebsd/8/NSCD
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https://bugs.launchpad.net/bugs/959037
Title:
NM-controlled dnsmasq prevents other DNS servers from starting
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