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       apt-p2p — apt helper for peer-to-peer downloads of Debian packages


       Normally apt-p2p is run from init.d using twistd, in which case no apt-
       p2p options can be specified on the command-line, and all configuration
       variables   are   read  from  the  default  config  file  locations  of
       $HOME/.apt-p2p/apt-p2p.conf and /etc/apt-p2p/apt-p2p.conf.  The command
       is then:

       twistd -y /path/to/apt-p2p [twistd options ...]

       For a detailed listing of the twistd options, see twistd(1)

       apt-p2p can also be run without twistd by executing:

       apt-p2p [options ...]

       In  this  case,  you  can  specify  the options documented below on the


       apt-p2p is a helper for downloading Debian packages files with APT.  It
       will  download  any needed files from other Apt-P2P peers in a peer-to-
       peer manner, and so reduce the strain on the Debian mirrors.

       In order for APT to send it’s requests  to  apt-p2p,  the  sources.list
       entries  must be modified to point to the local apt-p2p address. Unless
       you have changed the default port, then adding "localhost:9977/" to the
       beginning  of  each  entry  should  be sufficient. For example, if your
       sources.list contains a line like this:

              deb etch main contrib non-free

       then replace it with this:

              deb  http://localhost:9977/  etch   main
              contrib non-free

       You  can  do the same with ’deb-src’ lines as well, and apt-p2p will be
       used to download and share your source packages as well.

       It is VERY important that Apt-P2P’s ports be reachable by other  peers.
       This  is  needed  both  to  share  files with others, and to connect to
       others through  the  DHT  to  find  peers  for  files.  If  you  aren’t
       accessible  by  others,  you will not only not share anything, but your
       performance during downloading will be affected.

       Apt-P2P uses a default port of 9977, over both TCP and  UDP,  for  it’s
       communication.  You  can  change  this  port  in  the /etc/apt-p2p/apt-
       p2p.conf file, and use different ports for TCP  and  UDP,  if  desired.
       Whatever  port  you  use,  make  sure to forward it through your NAT or
       firewall to improve your performance and share with others. Information
       on port forwarding can be found here:

        (link to URL

       Apt-P2P  is  not  designed  to  function  as  a downloader for multiple
       clients on a private network. Apt-P2P checks  the  source  of  incoming
       requests  and  only  responds  to  those  from  the localhost. For more

        (link to URL


       These programs follow the usual GNU command  line  syntax,  with  short
       options  starting  with  a single dash (’-’), and long options starting
       with two dashes (’--’).  A summary of options is included below.

       -c filename, --configfile=filename
                 the filename to use for the configuration file, options found
                 in  this  file are combined with those in $HOME/.apt-p2p/apt-
                 p2p.conf and /etc/apt-p2p/apt-p2p.conf  (see  apt-p2p.conf(5)
                 for the format of the file)

       -l filename, --logfile=filename
                 the  filename  to  print  log  messages  to, or ’-’ to log to
                 standard output, if not specified  then  /var/log/apt-p2p.log
                 will be used

       -h, --help
                 print a help message describing the invocation of the program

       -v, --version
                 print the version of the program


       apt-p2p.conf(5), twistd(1)


       This manual page was written by Cameron Dale  <>  for
       the  Debian  system (but may be used by others).  Permission is granted
       to copy, distribute and/or modify this document under the terms of  the
       GNU General Public License, Version 2 or any later version published by
       the Free Software Foundation.

       On Debian systems, the complete text of the GNU General Public  License
       can be found in /usr/share/common-licenses/GPL.