ix-bird-config/bird.conf

protocol device {
	scan time 10;
}

protocol static {
	route 172.20.0.0/14 via 172.20.170.192;
	route 172.20.170.192/28 reject;
	import all;
	export none;
}

include "/etc/bird/local4.conf";

# filter helpers
#################

##include "/etc/bird/filter4.conf";

protocol kernel {
	scan time 20;
	metric 64;	# Use explicit kernel route metric to avoid collisions
			# with non-BIRD routes in the kernel routing table
	import none;
	#export all;	# Actually insert routes into the kernel routing table
	export filter {
		if source = RTS_STATIC then reject;
		krt_prefsrc = OWNIP;
		accept;
	};
}

include "/etc/bird/ospf.conf";

template bgp dnpeers {
	local as OWNAS;
	# metric is the number of hops between us and the peer
	path metric 1;
	# this lines allows debugging filter rules
	# filtered routes can be looked up in birdc using the "show route filtered" command
	import keep filtered;
	import filter {
		# accept every subnet, except our own advertised subnet
		# filtering is important, because some guys try to advertise routes like 0.0.0.0
		if is_valid_network() && !is_self_net() then {
			accept;
		}
		reject;
	};

	export filter {
		# here we export the whole net
		if is_valid_network() then {
			accept;
		}
		reject;
	};

	import limit 1000 action block;
	#source address 172.20.170.192;
};

include "/etc/bird/peers4/*";