nixpkgs/nixos/tests/systemd-networkd-dhcpserver-static-leases.nix

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# In contrast to systemd-networkd-dhcpserver, this test configures
# the router with a static DHCP lease for the client's MAC address.
import ./make-test-python.nix ({ lib, ... }: {
name = "systemd-networkd-dhcpserver-static-leases";
meta = with lib.maintainers; {
maintainers = [ veehaitch tomfitzhenry ];
};
nodes = {
router = {
virtualisation.vlans = [ 1 ];
systemd.services.systemd-networkd.environment.SYSTEMD_LOG_LEVEL = "debug";
networking = {
useNetworkd = true;
useDHCP = false;
firewall.enable = false;
};
systemd.network = {
networks = {
# systemd-networkd will load the first network unit file
# that matches, ordered lexiographically by filename.
# /etc/systemd/network/{40-eth1,99-main}.network already
# exists. This network unit must be loaded for the test,
# however, hence why this network is named such.
"01-eth1" = {
name = "eth1";
networkConfig = {
DHCPServer = true;
Address = "10.0.0.1/24";
};
dhcpServerStaticLeases = [{
dhcpServerStaticLeaseConfig = {
MACAddress = "02:de:ad:be:ef:01";
Address = "10.0.0.10";
};
}];
};
};
};
};
client = {
virtualisation.vlans = [ 1 ];
systemd.services.systemd-networkd.environment.SYSTEMD_LOG_LEVEL = "debug";
networking = {
useNetworkd = true;
useDHCP = false;
firewall.enable = false;
interfaces.eth1 = {
useDHCP = true;
macAddress = "02:de:ad:be:ef:01";
};
};
# This setting is important to have the router assign the
# configured lease based on the client's MAC address. Also see:
# https://github.com/systemd/systemd/issues/21368#issuecomment-982193546
systemd.network.networks."40-eth1".dhcpV4Config.ClientIdentifier = "mac";
};
};
testScript = ''
start_all()
with subtest("check router network configuration"):
router.wait_for_unit("systemd-networkd-wait-online.service")
eth1_status = router.succeed("networkctl status eth1")
assert "Network File: /etc/systemd/network/01-eth1.network" in eth1_status, \
"The router interface eth1 is not using the expected network file"
assert "10.0.0.1" in eth1_status, "Did not find expected router IPv4"
with subtest("check client network configuration"):
client.wait_for_unit("systemd-networkd-wait-online.service")
eth1_status = client.succeed("networkctl status eth1")
assert "Network File: /etc/systemd/network/40-eth1.network" in eth1_status, \
"The client interface eth1 is not using the expected network file"
assert "10.0.0.10" in eth1_status, "Did not find expected client IPv4"
with subtest("router and client can reach each other"):
client.wait_until_succeeds("ping -c 5 10.0.0.1")
router.wait_until_succeeds("ping -c 5 10.0.0.10")
'';
})