title: excessive systemd-resolv queries on Ubuntu
body: <p>im seeing a lot of random looking queries occurring on my laptop.  systemd-resolv is listening on 5355 and my network packet sniffer is seeing lots of queries from my laptop IP to 224.0.0.252 that look like the following:</p>
  
  <pre><code>aewfepnumefp
  aheqtiqyacacmy
  ajjjkljfty
  akbbdroya
  alhxidmgqw
  aljivqlbx
  atozcboeqznl
  auiordvmglyxjfx
  aungrifairwkfbr
  avbczfxhdjxkffl
  awkzirhwbiom
  azjqvwzd
  bbdumnrwm
  bcgssagcic
  bcvjjuud
  bergqgnifabkyxs
  blrjwrc
  bomkbpcbnwo
  </code></pre>
  
  <p>Does anyone know how to establish what is generating these? Im running Ubuntu 17.10.</p>
  
  <p>Cheers</p>