55 lines
1.4 KiB
Markdown
55 lines
1.4 KiB
Markdown
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---
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title: Static addressing with systemd-networkd
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description: Dual IPv4 and IPv6 configuration
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date: 2025-03-04
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tags:
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- systemd
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---
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## Introduction
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I like to keep up with what established operating systems or Linux distributions
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are doing even though I am not using them all everyday. While trying out
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OpenSUSE again recently, I gave a first try ever to using `systemd-networkd`.
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## Configuration
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Here is an example of how to configure your network statically with
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`systemd-networkd`. The quirk is that there is no way to specify two `Gateway`
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attributes in a `Network` block. Since you can have multiple `Address` blocks,
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this is an inconsistency that required some reading of the manual before it
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clicked.
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Here is what ended up working for my `/etc/systemd/network/20-wired.network`:
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``` ini
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[Match]
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MACAddress=fa:16:3e:82:71:b7
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[Network]
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Address=37.187.244.19/32
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Address=2001:41d0:401:3100::fd5/64
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DNS=1.1.1.1
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[Route]
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Destination=0.0.0.0/0
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Gateway=37.187.244.1
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GatewayOnLink=yes
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Metric=10
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[Route]
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Destination=::/0
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Gateway=2001:41d0:401:3100::1
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Metric=10
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```
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The `GatewayOnLink` attribute might not be needed for you. I am using it because
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this is an OVH box and this provider likes to reduce instances chatter by
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issuing `/32` netmasks on DHCP. Though I could use a more standard netmask in
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this static configuration, I choose to respect their preference.
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## Conclusion
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In the end `systemd-networkd` works well and I have no complaints other than
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this quirkiness.
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