[Bug 1688364] Re: Non existent host causes 100% cpu utilization by systemd-resolved and dnsmasq

[Steve Langasek]

> correction - needed to disable dnsmasq service as network manager
> starts it instead.

network-manager in 17.04 and later is not expected to start dnsmasq, it
integrates with resolved instead.  Have you overridden the default
network-manager config?

Is it possible your issue is related to LP: #1694156?

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Title:
  Non existent host causes 100% cpu utilization by systemd-resolved and
  dnsmasq

Status in dnsmasq package in Ubuntu:
  Incomplete
Status in network-manager package in Ubuntu:
  New
Status in resolvconf package in Ubuntu:
  New

Bug description:
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: query[A] cf.shareasimage.com from 127.0.0.1
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: forwarded cf.shareasimage.com to 127.0.0.53
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: query[A] cf.shareasimage.com from 127.0.0.1
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: forwarded cf.shareasimage.com to 127.0.0.53
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: query[A] googletagservices.com from 127.0.0.1
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: forwarded googletagservices.com to 127.0.0.53
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: query[A] cf.shareasimage.com from 127.0.0.1
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: forwarded cf.shareasimage.com to 127.0.0.53
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: query[A] cf.shareasimage.com from 127.0.0.1
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: forwarded cf.shareasimage.com to 127.0.0.53
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: query[A] googletagservices.com from 127.0.0.1
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: forwarded googletagservices.com to 127.0.0.53
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: query[A] cf.shareasimage.com from 127.0.0.1
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: forwarded cf.shareasimage.com to 127.0.0.53
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: query[A] cf.shareasimage.com from 127.0.0.1
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: forwarded cf.shareasimage.com to 127.0.0.53
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: query[A] googletagservices.com from 127.0.0.1
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: forwarded googletagservices.com to 127.0.0.53
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: query[A] cf.shareasimage.com from 127.0.0.1
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: forwarded cf.shareasimage.com to 127.0.0.53
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: query[A] cf.shareasimage.com from 127.0.0.1
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: forwarded cf.shareasimage.com to 127.0.0.53
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: query[A] googletagservices.com from 127.0.0.1
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: forwarded googletagservices.com to 127.0.0.53
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: query[A] cf.shareasimage.com from 127.0.0.1
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: forwarded cf.shareasimage.com to 127.0.0.53
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: query[A] cf.shareasimage.com from 127.0.0.1
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: forwarded cf.shareasimage.com to 127.0.0.53
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: query[A] googletagservices.com from 127.0.0.1
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: forwarded googletagservices.com to 127.0.0.53
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: query[A] cf.shareasimage.com from 127.0.0.1
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: forwarded cf.shareasimage.com to 127.0.0.53
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: query[A] cf.shareasimage.com from 127.0.0.1
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: forwarded cf.shareasimage.com to 127.0.0.53
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: query[A] googletagservices.com from 127.0.0.1
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: forwarded googletagservices.com to 127.0.0.53
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: query[A] cf.shareasimage.com from 127.0.0.1
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: forwarded cf.shareasimage.com to 127.0.0.53
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: query[A] cf.shareasimage.com from 127.0.0.1
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: forwarded cf.shareasimage.com to 127.0.0.53
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: query[A] googletagservices.com from 127.0.0.1
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: forwarded googletagservices.com to 127.0.0.53
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: query[A] cf.shareasimage.com from 127.0.0.1
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: forwarded cf.shareasimage.com to 127.0.0.53
  May 04 13:32:07 cannon-fodder dnsmasq[8101]: query[A] cf.shareasimage.com from 127.0.0.1

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