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Comment on How do I stop Docker trying to pull from IPv6?

tychosmoose@piefed.social ⁨3⁩ ⁨days⁩ ago

Ok, so it's probably using NetworkManager. I would try disabling it in /etc/NetworkManager/NetworkManager.conf by adding a block like:

[ipv6]
addr-gen-mode=stable-privacy
method=disabled

Then sudo systemctl restart NetworkManager.
Can't say for sure if this will work. I dislike using NetworkManager on my servers so I can't test if this works. But hopefully the before/after of ip addr is different.

Although it looks like your ip addr output posted an hour or so ago doesn't show any ipv6 addressing. Maybe the problem is solved now.

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Zagorath@aussie.zone ⁨3⁩ ⁨days⁩ ago
Unfortunately not.

docker run hello-world Unable to find image 'hello-world:latest' locally docker: Error response from daemon: Get "https://registry-1.docker.io/v2/library/hello-world/manifests/sha256:ec153840d1e635ac434fab5e377081f17e0e15afab27beb3f726c3265039cfff": dial tcp [2600:1f18:2148:bc00:eff:d3ae:b836:fa07]:443: connect: network is unreachable Run 'docker run --help' for more information
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- tychosmoose@piefed.social ⁨3⁩ ⁨days⁩ ago
  Well crap. Do you have no ipv6 address now in ip addr?
  
  Guess I gave Docker too much benefit of the doubt and assumed it should failover to v4 once v6 was disabled. Bad assumption on my part.
  
  Could it be a DNS problem? If you dig registry-1.docker.io +short does it return an ipv4 or v6 address?
  
  It looks like there have been sporadic reports of problems from people since last year.
  
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  - MysteriousSophon21@lemmy.world ⁨2⁩ ⁨days⁩ ago
    Try adding {“ipv6”: false} to your /etc/docker/daemon.json file (create it if it doesnt exist), then restart docker with sudo systemctl restart docker - this forces docker to use IPv4 only.
    
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    tychosmoose@piefed.social ⁨2⁩ ⁨days⁩ ago
    This flag seems to only disable ipv6 on the default Docker bridge network, not daemon-wide. At least per this discussion.
    
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  - Zagorath@aussie.zone ⁨3⁩ ⁨days⁩ ago
    
    Do you have no ipv6 address now in ip addr
    
    Just comparing it by eye, there’s no change.
    
    zag@raspberrypi:~ $ man dig No manual entry for dig zag@raspberrypi:~ $ which dig zag@raspberrypi:~ $ sudo apt install dig Reading package lists... Done Building dependency tree... Done Reading state information... Done E: Unable to locate package dig
    
    But if I ping it
    
    $ ping registry-1.docker.io PING registry-1.docker.io (107.20.112.188) 56(84) bytes of data.
    
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    tychosmoose@piefed.social ⁨3⁩ ⁨days⁩ ago
    It's in the dnsutils package.
    
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