# router id is not required for babeld, but necessary for bird startup
router id 192.0.2.0;

ipv4 table fff4;
ipv6 sadr table fff6;

protocol device {
	scan time 15;
}

# device routes for ipv4 peering address
protocol direct {
	ipv4 {
		table fff4;
		import filter {
			include "/tmp/bird/include/nat-filter.conf";

			if (net ~ 10.50.0.0/16 || net ~ 10.83.0.0/16) && net.len = 32 then {
				accept;
			}
			reject;
		};
	};
}

# device routes on loopback interface
protocol direct {
	ipv4 {
		table fff4;
		import filter {
			include "/tmp/bird/include/nat-filter.conf";

			if net ~ 10.50.0.0/16 || net ~ 10.83.0.0/16 then {
				accept;
			}
			reject;
		};
	};

	ipv6 sadr {
		table fff6;
		import filter {
			if net ~ fdff::/64 from ::/0 then {
				reject;
			}

			# only import GUA + ULA addresses
			if net !~ 2000::/3 from ::/0 && net !~ fc00::/7 from ::/0 then {
				reject;
			}

			accept;
		};
		import keep filtered;
	};

	interface "lo";
}

# ipv6 kernel route interface
protocol kernel {
	ipv6 sadr {
		table fff6;
		import filter {
			# only import routes from kernel with proto static
			if krt_source != 4 then {
				reject;
			}

			if net ~ fdff::/64 from ::/0 then {
				reject;
			}

			accept;
		};
		export all;
		preference 200;
	};
	kernel table 10;
	scan time 15;
	learn yes;
}

# ipv4 kernel route interface
protocol kernel {
	ipv4 {
		table fff4;
		import filter {
			include "/tmp/bird/include/nat-filter.conf";

			# only import routes from kernel with proto static
			if krt_source = 4 then {
				accept;
			}
			reject;
		};
		export all;
		preference 200;
	};
	kernel table 10;
	scan time 15;
	learn yes;
}

protocol babel {
	# required due to static configuration of global router id.
	# also improves reconnect speed after restart.
	randomize router id yes;

	ipv4 {
		table fff4;
		import all;
		export all;
	};

	ipv6 sadr {
		table fff6;
		import all;
		export all;
	};

	include "/tmp/bird/include/babelpeers.conf";
};