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kevinveenbirkenbachandClaude Sonnet 4.6
7d05ba0a92
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
65 lines
1.2 KiB
Markdown
65 lines
1.2 KiB
Markdown
# Network 🌐
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## Docker Pull Errors 🐳
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Images cannot be pulled separately, as they run inside a container.
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If a `docker pull` or general image pull fails, it may be caused by an MTU, network, or IPv6 issue on the host PC. Check and fix accordingly:
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### MTU 📦
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Docker defaults to MTU 1500. If the host network uses a smaller MTU (e.g. due to VPN), packets may be dropped or fragmented.
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```bash
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ip link show docker0
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ip link show eth0
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```
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Fix via `/etc/docker/daemon.json`:
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```json
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{"mtu": 1450}
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```
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Then restart Docker:
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```bash
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sudo systemctl restart docker
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```
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### IPv6 🔢
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If IPv6 is active but misconfigured, Docker may attempt to pull over IPv6 and fail.
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```bash
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ip -6 addr show
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curl -6 https://registry-1.docker.io/v2/
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```
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The recommended way to disable IPv6 for local development is via Make:
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```bash
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make disable-ipv6
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```
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To restore the original IPv6 settings afterwards:
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```bash
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make restore-ipv6
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```
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Alternatively, disable IPv6 only in Docker via `/etc/docker/daemon.json`:
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```json
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{"ipv6": false}
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```
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### General Connectivity 🔌
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```bash
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ping -c 3 registry-1.docker.io
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curl -v https://registry-1.docker.io/v2/
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```
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Check firewall rules, proxy settings, and DNS configuration.
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