Docker ERROR could not find an available non-overlapping IPv4 address pool among the defaults to assign to the network

Question

I have a directory apkmirror-scraper-compose with the following structure      -- docker-compose yml  -- privoxy         -- config         -- Dockerfile  -- scraper         -- Dockerfile         -- newnym py         -- requirements txt  -- tor      -- Dockerfile   I m trying to run the following docker-compose yml   version   3   services    privoxy      build    privoxy     ports        -  8118 8118      links        - tor    tor      build        context    tor       args          password         ports        -  9050 9050        -  9051 9051     scraper      build    scraper     links        - tor       - privoxy   where the Dockerfile for tor is  FROM alpine latest EXPOSE 9050 9051 ARG password RUN apk --update add tor RUN echo  ControlPort 9051   gt  gt   etc tor torrc RUN echo  HashedControlPassword   tor --quiet --hash-password  password    gt  gt   etc tor torrc CMD   tor     that for privoxy is  FROM alpine latest EXPOSE 8118 RUN apk --update add privoxy COPY config  etc privoxy config CMD   privoxy    --no-daemon     where config consists of the two lines  listen-address 0 0 0 0 8118 forward-socks5   tor 9050     and the Dockerfile for scraper is  FROM python 2 7-alpine ADD    scraper WORKDIR  scraper RUN pip install -r requirements txt CMD   python    newnym py     where requirements txt contains the single line requests  Finally  the program newnym py is designed to simply test whether changing the IP address using Tor is working   from time import sleep  time  import requests as req import telnetlib   def get ip        IPECHO ENDPOINT    http   ipecho net plain      HTTP PROXY    http   privoxy 8118      return req get IPECHO ENDPOINT  proxies   http   HTTP PROXY   text   def request ip change        tn   telnetlib Telnet  tor   9051      tn read until  Escape character is         2      tn write  AUTHENTICATE    r n       tn read until  250 OK   2      tn write  signal NEWNYM r n       tn read until  250 OK   2      tn write  quit r n       tn close     if   name         main         dts          try          while True              ip   get ip               t0   time               request ip change               while True                  new ip   get ip                   if new ip    ip                      sleep 1                  else                      break             dt   time   - t0             dts append dt              print     - gt     in    s  format ip  new ip  int dt        except KeyboardInterrupt          print  Stopping              print  Average      format sum dts    len dts      The docker-compose build builds successfully  but if I try docker-compose up  I get the following error message   Creating network  apkmirrorscrapercompose default  with the default driver ERROR  could not find an available  non-overlapping IPv4 address pool among the defaults to assign to the network   I tried searching for help on this error message  but couldn t find any  What is causing this error

User · Answer

Check if any other container is running  If yes  do  docker-compose down If VPN is connected  then disconnect it and try again to up docker container   docker-compose up -d container name

User · Answer

Killing the vpn is not needed   This other comment about using a new network comes pretty close to the solution for me  and was working for a while  but I found a better way thanks to some talk over in another question  Create a network with   docker network create your-network --subnet 172 24 24 0 24   Then  at the bottom of docker-compose yaml  put this   networks    default      external         name  your-network   Done   No need to add networks to all container definitions etc   and you can re-use the network with other docker-compose files as well if you d like

User · Answer

I have the same problem  I ran docker system prune -a --volumes  docker network prune  but neither helped me   I use a VPN  I turned off the VPN and  after it docker started normal and was able to create a network  After that  you can enable VPN again

User · Answer

Same error occurred while running VPN connection  Tried to create docker image with docker-compose  Works for me to stop VPN connection for a moment and execute the command

User · Answer

If you want lots of networks then you can control how much IP space docker hands out to each network via the default-address-pools deamon setting  so you could add this to your  etc docker daemon json        bip    10 254 1 1 24      default-address-pools     base   10 254 0 0 16   size  28        Here I ve reserved 10 254 1 1 24  254 IP addresses  for the bridge network   For any other network I create  docker will partition up the 10 254 0 0 space  65k hosts   giving out 16 hosts at a time   size  28 refers to the CIDR mask  for 16 hosts    If I create a few networks and then run docker network inspect  lt name gt  on them  it might display something like this                        Subnet    10 254 0 32 28            Gateway    10 254 0 33                The 10 254 0 32 28 means this network can use 16 ip addresses from 10 254 0 32 - 10 254 0 47

User · Answer

As other answers mentioned  Docker s default local bridge network only supports 30 different networks  each one of them uniquely identifiable by their name   If you are not using them  then docker network prune will do the trick   However  you might be interested in establishing more than 30 containers  each with their own network  Were you interested in doing so then you would need to define an overlay network  This is a bit more tricky but extremely well documented here   EDIT  May 2020   Link has become unavailable  going through the docs there s not an exact replacement  but I would recommend starting from here

User · Answer

I encoutered the same problem  the reason why is that you reached the max of networks    do an   docker network ls Choose one to remove using  docker network rm networkname default

User · Answer

Answer is   docker network prune

User · Answer

I had the same error  but in my case  it was because I had too many containers running  about 220

User · Answer

I fixed this issue by steps     turn off your network  wireless or wired      reboot your system  before turning on your network on PC  execute command docker-compose up  it s going to create new network  then you can turn network on and go on

User · Answer

I ran into this problem because I had OpenVPN running  As soon as I killed OpenVPN  docker-compose up fired right up  and the error disappeared

User · Answer

I ran in this problem with OpenVPN working as well and I ve found a solution where you should NOT stop start OpenVPN server   Idea that You should specify what exactly subnet you want to use  In docker-compose yml write   networks    default      driver  bridge     ipam        config          - subnet  172 16 57 0 24   That s it  Now  default network will be used and if your VPN did not assign you something from 172 16 57   subnet  you re fine

User · Answer

I ve seen it suggested docker may be at its maximum of created networks  The command docker network prune can be used to remove all networks not used by at least one container   My issue ended up being  as Robert commented about  an issue with openvpn service openvpn stop  solved  the problem

User · Answer

This happened to me because I was using OpenVPN  I found a way that I don t need to stop using the VPN or manually add a network to the docker-compose file nor run any crazy script    I switched to WireGuard instead of OpenVPN  More specifically  as I am running the nordvpn solution  I installed WireGuard and used their version of it  NordLynx

User · Answer

Following Peter Hauge s comment  upon running docker network ls I saw  among other lines  the following   NETWORK ID          NAME                                    DRIVER              SCOPE dc6a83d13f44        bridge                                  bridge              local ea98225c7754        docker gwbridge                         bridge              local 107dcd8aa889        host                                    host                local   The line with NAME and DRIVER as both host seems to be what he is referring to with  networks already created on your host   So  following https   gist github com bastman 5b57ddb3c11942094f8d0a97d461b430  I ran the command  docker network rm   docker network ls   grep  bridge    awk        print  1       Now docker-compose up works  although newnym py produces an error

User · Answer

I ran into the same problem  Creating network  schemaregistry1 default  with the default driver   ERROR  could not find an available  non-overlapping IPv4 address pool among the defaults to assign to the network  and nothing helped until I turned off the Cisco VPN   after that docker-compose up worked

User · Answer

You can try    sudo service network-manager restart   Worked for me

User · Answer

TL DR Add version   3 7  services    web              network mode  bridge  Read about network mode in the documentation  Long version Disclaimer  I am not very knowledgeable about Docker networking  but this did the trick for me  YMMV  When I ran docker run my-image the networking gave me no problems  but when I converted this command to a docker-compose yml file  I got the same error as the OP  I read Arenim s answer and some other stuff on the internet that suggested to re-use an existing network  You can find existing networks like this    docker network ls NETWORK ID          NAME                DRIVER              SCOPE ca0415dfa442        bridge              bridge              local 78cbbda034dd        host                host                local 709f13f4ce2d        none                null                local  I wanted to reuse the default bridge network  so I added services    web           networks    default      external        name  bridge  to the the root of my docker-compose yml  so not inside one of my services  but at the root indentation   I now got the following error   ERROR  for your-container network-scoped alias is supported only for containers in user defined networks  This led met to this Docker Github issue  that plainly stated that I should add the network mode object to my docker-compose  version   3 7  services    web              network mode  bridge  This was tested on Docker version 18 09 8  docker-compose version 1 24 1 and the compose file format 3 7

User · Answer

I had an identical problem with the same error message but the solution with removal of unused docker networks didn t help me  I ve deleted all non-default docker networks  and all images and containers as well  but it didn t help - docker still was not able to create a new network   The cause of the problem was in network interfaces that were left after OpenVpn installation   It was installed on the host previously   I found them by running ifconfig command       tun0  Link encap UNSPEC  HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00         inet addr 10 8 0 2  P-t-P 10 8 0 2  Mask 255 255 255 0       UP POINTOPOINT RUNNING NOARP MULTICAST  MTU 1500  Metric 1       RX packets 75 errors 0 dropped 0 overruns 0 frame 0       TX packets 0 errors 0 dropped 0 overruns 0 carrier 0       collisions 0 txqueuelen 100        RX bytes 84304  84 3 KB   TX bytes 0  0 0 B   tun1  Link encap UNSPEC  HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00         inet addr 10 8 0 2  P-t-P 10 8 0 2  Mask 255 255 255 0       UP POINTOPOINT RUNNING NOARP MULTICAST  MTU 1500  Metric 1       RX packets 200496 errors 0 dropped 0 overruns 0 frame 0       TX packets 148828 errors 0 dropped 0 overruns 0 carrier 0       collisions 0 txqueuelen 100        RX bytes 211583838  211 5 MB   TX bytes 9568906  9 5 MB        I ve found that I can remove them with a couple of commands   ip link delete tun0 ip link delete tun1   After this the problem has disappeared

User · Answer

I ran into this issue on a corporate development VM which wasn t running OpenVPN   Checking out etc docker daemon json  I found      quot default-address-pools quot              quot base quot    quot 192 168 11 0 24 quot        quot size quot   24             Strangely  removing the default-address-pools field and then restarting docker with sudo systemctl restart docker fixed the issue for me   I m assuming this let docker choose a more suitable default  but I don t know what the problem was with the chosen default

[python] Docker "ERROR: could not find an available, non-overlapping IPv4 address pool among the defaults to assign to the network"

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