78 lines
1.6 KiB
Nix
78 lines
1.6 KiB
Nix
# Module for the IPv6 Router Advertisement Daemon.
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{ config, pkgs, ... }:
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with pkgs.lib;
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let
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cfg = config.services.radvd;
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confFile = pkgs.writeText "radvd.conf" cfg.config;
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in
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{
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###### interface
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options = {
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services.radvd.enable = mkOption {
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default = false;
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description =
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''
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Whether to enable the Router Advertisement Daemon
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(<command>radvd</command>), which provides link-local
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advertisements of IPv6 router addresses and prefixes using
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the Neighbor Discovery Protocol (NDP). This enables
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stateless address autoconfiguration in IPv6 clients on the
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network.
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'';
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};
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services.radvd.config = mkOption {
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example =
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''
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interface eth0 {
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AdvSendAdvert on;
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prefix 2001:db8:1234:5678::/64 { };
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};
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'';
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description =
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''
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The contents of the radvd configuration file.
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'';
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};
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};
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###### implementation
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config = mkIf cfg.enable {
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environment.systemPackages = [ pkgs.radvd ];
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jobs.radvd =
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{ description = "IPv6 Router Advertisement Daemon";
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startOn = "started network-interfaces";
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preStart =
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''
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# !!! Radvd only works if IPv6 forwarding is enabled. But
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# this should probably be done somewhere else (and not
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# necessarily for all interfaces).
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echo 1 > /proc/sys/net/ipv6/conf/all/forwarding
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'';
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exec = "${pkgs.radvd}/sbin/radvd -m syslog -s -C ${confFile}";
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daemonType = "fork";
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};
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};
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}
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