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Systemd/networkd: Difference between revisions
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imported>M-bdf m (Mention `systemd.network.wait-online.anyInterface`) |
imported>Mweinelt No edit summary |
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}; | }; | ||
</syntaxhighlight> | </syntaxhighlight> | ||
=== Router Advertisement === | |||
Router advertisements are way to allow clients to achieve stateless autoconfiguration (SLAAC). The most prominent setup is where the router announces a prefix onto a LAN segment, which the receiving client can use to set up an address on that prefix, and configure the sender as its default gateway. | |||
In this example the router will announce a static IPv6 prefix on the <code>lan</code> interface from it's automatically configured link local address on that link. The router does not generally require a unique local or globally reachable address on the link, unless you also want to host services like DNS and NTP on that LAN segment. | |||
Recommended documentation: | |||
* [https://www.freedesktop.org/software/systemd/man/systemd.network.html#%5BIPv6SendRA%5D%20Section%20Options <nowiki>[IPv6SendRa]</nowiki> configuration reference] | |||
<syntaxhighlight lang="nix"> | |||
systemd.network = { | |||
networks = { | |||
"30-lan" = { | |||
matchConfig.Name = "lan"; | |||
address = [ | |||
"2001:db8:1122:3344::1/64" | |||
]; | |||
networkConfig = { | |||
IPv6SendRA = true; | |||
}; | |||
ipv6Prefixes = [ { | |||
# Announce a static prefix | |||
ipv6PrefixConfig.Prefix = "2001:db8:1122:3344::/64"; | |||
} ]; | |||
ipv6SendRaConfig = { | |||
# Provide a DNS resolver | |||
EmitDNS = true; | |||
DNS = "2001:db8:1122:3344::1"; | |||
}; | |||
}; | |||
}; | |||
</syntaxhighlight> | |||
An extended form of this setup uses DHCPv6 prefix delegation to acquire a dynamic prefix over a WAN link, which then gets distributed onto designated LAN segments. | |||
=== WireGuard === | === WireGuard === | ||