https://coolscript.net/index.php?action=history&feed=atom&title=Docker_with_ipv6_on_Digital_Ocean 2026-06-02T16:21:13Z Revision history for this page on the wiki MediaWiki 1.40.1 https://coolscript.net/index.php?title=Docker_with_ipv6_on_Digital_Ocean&diff=987&oldid=prev 2023-10-14T18:48:26Z

<p>Created page with &quot;This is a proof of concept for a Docker compose setup together with ipv6 on Digital Ocean&lt;br&gt; =Interface Config= ==Localhost== The following lists the setup of a typical network configuration, we focus the v6 configuration: # ifconfig eth0 eth0: flags=4163&lt;UP,BROADCAST,RUNNING,MULTICAST&gt; mtu 1500 inet 159.65.xxx.yyy netmask 255.255.248.0 broadcast 159.65.xxx.255 inet6 &#039;&#039;&#039;2604:a880:400:d0::xxxx:yyy1&#039;&#039;&#039; prefixlen 64 scopeid 0x0&lt;global&gt; inet...&quot;</p> <p><b>New page</b></p><div>This is a proof of concept for a Docker compose setup together with ipv6 on Digital Ocean&lt;br&gt;<br /> <br /> =Interface Config=<br /> ==Localhost==<br /> The following lists the setup of a typical network configuration, we focus the v6 configuration:<br /> <br /> # ifconfig eth0<br /> eth0: flags=4163&lt;UP,BROADCAST,RUNNING,MULTICAST&gt; mtu 1500<br /> inet 159.65.xxx.yyy netmask 255.255.248.0 broadcast 159.65.xxx.255<br /> inet6 &#039;&#039;&#039;2604:a880:400:d0::xxxx:yyy1&#039;&#039;&#039; prefixlen 64 scopeid 0x0&lt;global&gt;<br /> inet6 fe80::5ce1:17ff:feab:f3d9 prefixlen 64 scopeid 0x20&lt;link&gt;<br /> ether 5e:e1:17:ab:f3:d9 txqueuelen 1000 (Ethernet)<br /> RX packets 2697112 bytes 965626743 (920.8 MiB)<br /> RX errors 0 dropped 0 overruns 0 frame 0<br /> TX packets 1827600 bytes 8041106277 (7.4 GiB)<br /> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0<br /> <br /> ==Digital Ocean==<br /> Digital Ocean, Droplet information about the ipv6 configuration:&lt;br&gt;<br /> <br /> Public IPv6 Address<br /> 2604:a880:400:d0::xxxx:yyy1 Copy<br /> Public IPv6 Gateway<br /> 2604:a880:400:d0::1 <br /> <br /> Configurable Address Range<br /> 2604:a880:400:d0::xxxx:yyy0 - 2604:a880:400:d0::xxxx:yyyf <br /> <br /> ==System Information==<br /> # lsb_release -a<br /> No LSB modules are available.<br /> Distributor ID: Debian<br /> Description: Debian GNU/Linux 12 (bookworm)<br /> Release: 12<br /> Codename: bookworm<br /> <br /> =System Settings=<br /> *On the Drople itself - Enable v6<br /> **net.ipv6.conf.default.disable_ipv6 = 0<br /> **net.ipv6.conf.all.disable_ipv6 = 0<br /> <br /> *On the Drople itself - Enable Forwarding<br /> **net.ipv6.conf.default.forwarding=1<br /> **net.ipv6.conf.all.forwarding=1<br /> ==View/Print==<br /> sysctl -n net.ipv6.conf.default.disable_ipv6<br /> sysctl -n net.ipv6.conf.all.disable_ipv6<br /> sysctl -n net.ipv6.conf.default.forwarding<br /> sysctl -n net.ipv6.conf.all.forwarding<br /> ==SET==<br /> sysctl net.ipv6.conf.default.disable_ipv6=0<br /> sysctl net.ipv6.conf.all.disable_ipv6=0<br /> sysctl net.ipv6.conf.default.forwarding=1<br /> sysctl net.ipv6.conf.all.forwarding=1<br /> =Docker compose=<br /> *docker-compose.yaml<br /> *This sample does NOT require any settings in /etc/docker/dameon.json<br /> *Add the docker compose network, we will use the droplet as default gateway:<br /> version: &quot;3.9&quot;<br /> networks:<br /> app_net:<br /> enable_ipv6: true<br /> driver: bridge<br /> driver_opts:<br /> com.docker.network.enable_ipv6: &quot;true&quot;<br /> ipam:<br /> driver: default<br /> config:<br /> - subnet: 172.16.238.0/24<br /> gateway: 172.16.238.1<br /> - subnet: 2604:a880:400:d0::xxx:yyyy/124<br /> gateway: 2604:a880:400:d0::xxxx:yyy1<br /> <br /> <br /> <br /> *Add to each container the new network property, start with 2 then up to max 16<br /> networks:<br /> app_net:<br /> ipv4_address: 172.16.238.2<br /> ipv6_address: 2604:a880:400:d0::xxx:yyy2<br /> <br /> <br /> *Full sample<br /> version: &quot;3.9&quot;<br /> services:<br /> nginx:<br /> image: &quot;some-nginx-image&quot;<br /> ports:<br /> - &quot;443:443&quot;<br /> - &quot;80:80&quot;<br /> restart: unless-stopped<br /> container_name: nginx<br /> hostname: nginx<br /> user: www-data<br /> networks:<br /> app_net:<br /> ipv4_address: 172.16.238.2<br /> ipv6_address: 2604:a880:400:d0::xxxx:yyy2<br /> <br /> <br /> app:<br /> image: &quot;some-app&quot;<br /> restart: unless-stopped<br /> container_name: someapp<br /> hostname: someapp<br /> user: www-data<br /> networks:<br /> app_net:<br /> ipv4_address: 172.16.238.3<br /> ipv6_address: 2604:a880:400:d0::xxxx:yyy3<br /> <br /> <br /> networks:<br /> app_net:<br /> enable_ipv6: true<br /> driver: bridge<br /> driver_opts:<br /> com.docker.network.enable_ipv6: &quot;true&quot;<br /> ipam:<br /> driver: default<br /> config:<br /> - subnet: 172.16.238.0/24<br /> gateway: 172.16.238.1<br /> - subnet: 2604:a880:400:d0::xxxx:yyy0/124<br /> gateway: 2604:a880:400:d0::xxxx:yyy1</div>

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