import ./make-test-python.nix ( { nodes = { router = {config, pkgs, ...}: { config = { # This machines 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. configFile = pkgs.writeText "corerad.toml" '' [[interfaces]] name = "eth1" send_advertisements = true [[interfaces.plugins]] name = "prefix" prefix = "::/64" ''; }; }; }; 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" ''; })