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import ./make-test-python.nix (
{
nodes = {
router = {config, pkgs, ...}: {
config = {
# This machine simulates a router with IPv6 forwarding and a static IPv6 address.
boot.kernel.sysctl = {
"net.ipv6.conf.all.forwarding" = true;
};
networking.interfaces.eth1 = {
ipv6.addresses = [ { address = "fd00:dead:beef:dead::1"; prefixLength = 64; } ];
};
services.corerad = {
enable = true;
# Serve router advertisements to the client machine with prefix information matching
# any IPv6 /64 prefixes configured on this interface.
#
# This configuration is identical to the example in the CoreRAD NixOS module.
settings = {
interfaces = [
{
name = "eth0";
monitor = true;
}
{
name = "eth1";
advertise = true;
prefix = [{ prefix = "::/64"; }];
}
];
debug = {
address = "localhost:9430";
prometheus = true;
};
};
};
};
};
client = {config, pkgs, ...}: {
# Use IPv6 SLAAC from router advertisements, and install rdisc6 so we can
# trigger one immediately.
config = {
boot.kernel.sysctl = {
"net.ipv6.conf.all.autoconf" = true;
};
environment.systemPackages = with pkgs; [
ndisc6
];
};
};
};
testScript = ''
start_all()
with subtest("Wait for CoreRAD and network ready"):
# Ensure networking is online and CoreRAD is ready.
router.wait_for_unit("network-online.target")
client.wait_for_unit("network-online.target")
router.wait_for_unit("corerad.service")
# Ensure the client can reach the router.
client.wait_until_succeeds("ping -c 1 fd00:dead:beef:dead::1")
with subtest("Verify SLAAC on client"):
# Trigger a router solicitation and verify a SLAAC address is assigned from
# the prefix configured on the router.
client.wait_until_succeeds("rdisc6 -1 -r 10 eth1")
client.wait_until_succeeds(
"ip -6 addr show dev eth1 | grep -q 'fd00:dead:beef:dead:'"
)
addrs = client.succeed("ip -6 addr show dev eth1")
assert (
"fd00:dead:beef:dead:" in addrs
), "SLAAC prefix was not found in client addresses after router advertisement"
assert (
"/64 scope global temporary" in addrs
), "SLAAC temporary address was not configured on client after router advertisement"
with subtest("Verify HTTP debug server is configured"):
out = router.succeed("curl localhost:9430/metrics")
assert (
"corerad_build_info" in out
), "Build info metric was not found in Prometheus output"
'';
})
|