Thanks for taking the time to report this bug and helping to make Ubuntu
better. We appreciate the difficulties you are facing, but this appears
to be a "regular" (non-security) bug.  I have unmarked it as a security
issue since this bug does not show evidence of allowing attackers to
cross privilege boundaries nor directly cause loss of data/privacy.
Please feel free to report any other bugs you may find.

** Information type changed from Private Security to Public

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https://bugs.launchpad.net/bugs/1608185

Title:
  dnsmasq uses many ports

Status in dnsmasq package in Ubuntu:
  New

Bug description:
  The steps required to see that dnsmasq uses many ports are as follows:

    1. Open the browser (e.g. Firefox)
    2. Quickly open many websites on different tabs (3 websites are enough in 
my case)
    3. The connection is slow, so it takes some time until it connects to the 
websites.
    4. Before any connection to the website is made, execute:
                  sudo netstat -veepa -n -W
       and the following ports will appear (some output was omitted for 
clarity):

  Proto Recv-Q Send-Q Local Address           Foreign Address         State     
  User       Inode       PID/Program name
  tcp        0      0 127.0.1.1:53            0.0.0.0:*               LISTEN    
  0          44220       2983/dnsmasq    
  udp        0      0 0.0.0.0:7562            0.0.0.0:*                         
  65534      47002       2983/dnsmasq    
  udp        0      0 0.0.0.0:48812           0.0.0.0:*                         
  65534      48565       2983/dnsmasq    
  udp        0      0 0.0.0.0:20249           0.0.0.0:*                         
  65534      46993       2983/dnsmasq    
  udp        0      0 0.0.0.0:41013           0.0.0.0:*                         
  65534      46995       2983/dnsmasq    
  udp        0      0 127.0.1.1:53            0.0.0.0:*                         
  0          44219       2983/dnsmasq    
  udp        0      0 0.0.0.0:57570           0.0.0.0:*                         
  65534      49297       2983/dnsmasq    
  udp        0      0 0.0.0.0:20978           0.0.0.0:*                         
  65534      48597       2983/dnsmasq    
  udp        0      0 0.0.0.0:17104           0.0.0.0:*                         
  65534      48570       2983/dnsmasq    
  udp        0      0 0.0.0.0:4850            0.0.0.0:*                         
  65534      46986       2983/dnsmasq    
  udp        0      0 0.0.0.0:62450           0.0.0.0:*                         
  65534      48595       2983/dnsmasq    
  udp        0      0 0.0.0.0:1067            0.0.0.0:*                         
  65534      46994       2983/dnsmasq    
  udp        0      0 0.0.0.0:13620           0.0.0.0:*                         
  65534      47618       2983/dnsmasq    
  udp        0      0 0.0.0.0:9772            0.0.0.0:*                         
  65534      47027       2983/dnsmasq    
  udp        0      0 0.0.0.0:54956           0.0.0.0:*                         
  65534      48516       2983/dnsmasq    
  udp        0      0 0.0.0.0:38781           0.0.0.0:*                         
  65534      48555       2983/dnsmasq    
  udp        0      0 0.0.0.0:30589           0.0.0.0:*                         
  65534      46987       2983/dnsmasq    
  udp        0      0 0.0.0.0:30917           0.0.0.0:*                         
  65534      47558       2983/dnsmasq

  The user 65534 is "nobody", By inspection of /etc/passwd:

  nobody:x:65534:65534:nobody:/nonexistent:/usr/sbin/nologin

  
  I'm using Dnsmasq version 2.68 on Ubuntu 14.04.

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