auto lo
iface lo inet loopback
	up ip addr add 2001:db8::1/128 dev lo
	down ip addr del 2001:db8::1/128 dev lo

auto lan
iface lan inet manual
	up ip link set up dev lan
	up ip addr add 2001:db8:0:1::1/120 dev lan
	down ip addr del 2001:db8:0:1::1/120 dev lan
	down ip link set down dev lan

auto ebgp_r10
iface ebgp_r10 inet manual
	up ip link set up dev ebgp_r10
	up ip addr add 2001:db8:10:4::1/120 dev ebgp_r10
	down ip addr del 2001:db8:10:4::1/120 dev ebgp_r10
	down ip link set down dev ebgp_r10

auto ebgp_r20
iface ebgp_r20 inet manual
	up ip link set up dev ebgp_r20
	up ip addr add 2001:db8:0:5::1/120 dev ebgp_r20
	down ip addr del 2001:db8:0:5::1/120 dev ebgp_r20
	down ip link set down dev ebgp_r20