PC1

default via 192.168.4.1 dev eth0 
192.168.4.0/24 dev eth0 scope link  src 192.168.4.2

2001:db8:ef:4::/64 dev eth0  metric 256 
fe80::/64 dev eth0  metric 256 
default via 2001:db8:ef:4::1 dev eth0  metric 1024 
ff00::/8 dev eth0  metric 256 

--------------------------------------------------------------------------

PC2

default via 172.16.8.1 dev eth0 
172.16.8.0/24 dev eth0 scope link  src 172.16.8.2

2001:db8:8:ef::/64 dev eth0  metric 256 
fe80::/64 dev eth0  metric 256 
default via 2001:db8:8:ef::1 dev eth0  metric 1024 
ff00::/8 dev eth0  metric 256

--------------------------------------------------------------------------

R1

10.0.0.0/30 dev eth1  proto kernel  scope link  src 10.0.0.1 
10.1.0.0/30 dev eth0  proto kernel  scope link  src 10.1.0.1 
127.0.0.0/8 dev lo  proto kernel  scope link  src 127.0.0.1 
172.16.8.0/24 via 10.0.0.2 dev eth1  proto zebra 
192.168.4.0/24 via 10.1.0.2 dev eth0  proto zebra

2001:db8:0:f::/64 dev eth1  proto kernel  metric 256 
2001:db8:8:ef::/64 via 2001:db8:0:f::2 dev eth1  proto zebra  metric 1024 
2001:db8:e:1::/64 dev eth0  proto kernel  metric 256 
2001:db8:ef:4::/64 via 2001:db8:e:1::2 dev eth0  proto zebra  metric 1024 
fe80::/64 dev eth1  proto kernel  metric 256 
fe80::/64 dev eth0  proto kernel  metric 256 

--------------------------------------------------------------------------

R2

10.1.0.0/30 dev eth0  proto kernel  scope link  src 10.1.0.2 
127.0.0.0/8 dev lo  proto kernel  scope link  src 127.0.0.1 
172.16.8.0/24 via 10.1.0.1 dev eth0  proto zebra 
192.168.4.0/24 dev eth1  proto kernel  scope link  src 192.168.4.1 

2001:db8:8:ef::/64 dev eth0  metric 256 
fe80::/64 dev eth0  metric 256 
default via 2001:db8:8:ef::1 dev eth0  metric 1024 
ff00::/8 dev eth0  metric 256

--------------------------------------------------------------------------

R3

10.0.0.0/30 dev eth0  proto kernel  scope link  src 10.0.0.2 
127.0.0.0/8 dev lo  proto kernel  scope link  src 127.0.0.1 
172.16.8.0/24 dev eth1  proto kernel  scope link  src 172.16.8.1 
192.168.4.0/24 via 10.0.0.1 dev eth0  proto zebra 

2001:db8:0:f::/64 dev eth0  proto kernel  metric 256 
2001:db8:8:ef::/64 dev eth1  proto kernel  metric 256 
2001:db8:ef:4::/64 via 2001:db8:0:f::1 dev eth0  proto zebra  metric 1024 
fe80::/64 dev eth1  proto kernel  metric 256 
fe80::/64 dev eth0  proto kernel  metric 256 