Public bug reported:
Since NetworkManager uses dnsmasq to resolve its DNS names, it sometimes
enables the system to use dnsmasq before the network connection has been
successfully established. This causes dnsmasq to try and fail to resolve
some hostnames, it then caches them to its negative DNS cache.
To prevent this from happening I had to add no-negcache to
/etc/dnsmasq.d/network-manager
Should this be the default? I don't think any endpoint user benefits
from negative DNS cache, not even network admins as the DNS system is
robust enough to handle those.
** Affects: ubuntu
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1172467
Title:
NetworkManager uses dnsmasq with negative DNS cache enabled
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