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nixos/network-interfaces: add option to set source address

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This commit is contained in:
rnhmjoj
2025-06-14 02:37:40 +02:00
parent a1a86470e3
commit 1a8c90128b
4 changed files with 71 additions and 34 deletions
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76
nixos/modules/tasks/network-interfaces-scripted.nix
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@@ -42,6 +42,14 @@ let
ip link del dev "${i}" 2>/dev/null || true
'';
formatIpArgs =
args:
lib.pipe args [
(lib.filterAttrs (n: v: v != null))
(lib.mapAttrsToList (n: v: "${n} ${toString v}"))
(lib.concatStringsSep " ")
];
# warn that these attributes are deprecated (2017-2-2)
# Should be removed in the release after next
bondDeprecation = rec {
@@ -160,39 +168,41 @@ let
EOF
''}
# Set the default gateway.
${optionalString (cfg.defaultGateway != null && cfg.defaultGateway.address != "") ''
${optionalString (cfg.defaultGateway.interface != null) ''
ip route replace ${cfg.defaultGateway.address} dev ${cfg.defaultGateway.interface} ${
optionalString (cfg.defaultGateway.metric != null) "metric ${toString cfg.defaultGateway.metric}"
} proto static
''}
ip route replace default ${
optionalString (cfg.defaultGateway.metric != null) "metric ${toString cfg.defaultGateway.metric}"
} via "${cfg.defaultGateway.address}" ${
optionalString (
cfg.defaultGatewayWindowSize != null
) "window ${toString cfg.defaultGatewayWindowSize}"
} ${
optionalString (cfg.defaultGateway.interface != null) "dev ${cfg.defaultGateway.interface}"
} proto static
''}
${optionalString (cfg.defaultGateway6 != null && cfg.defaultGateway6.address != "") ''
${optionalString (cfg.defaultGateway6.interface != null) ''
ip -6 route replace ${cfg.defaultGateway6.address} dev ${cfg.defaultGateway6.interface} ${
optionalString (cfg.defaultGateway6.metric != null) "metric ${toString cfg.defaultGateway6.metric}"
} proto static
''}
ip -6 route replace default ${
optionalString (cfg.defaultGateway6.metric != null) "metric ${toString cfg.defaultGateway6.metric}"
} via "${cfg.defaultGateway6.address}" ${
optionalString (
cfg.defaultGatewayWindowSize != null
) "window ${toString cfg.defaultGatewayWindowSize}"
} ${
optionalString (cfg.defaultGateway6.interface != null) "dev ${cfg.defaultGateway6.interface}"
} proto static
''}
# Set the default gateway
${flip concatMapStrings
[
{
version = "-4";
gateway = cfg.defaultGateway;
}
{
version = "-6";
gateway = cfg.defaultGateway6;
}
]
(
{ version, gateway }:
optionalString (gateway != null && gateway.address != "") ''
${optionalString (gateway.interface != null) ''
ip ${version} route replace ${gateway.address} proto static ${
formatIpArgs {
metric = gateway.metric;
dev = gateway.interface;
}
}
''}
ip ${version} route replace default proto static ${
formatIpArgs {
metric = gateway.metric;
via = gateway.address;
window = cfg.defaultGatewayWindowSize;
dev = gateway.interface;
src = gateway.source;
}
}
''
)
}
'';
};