I would like to subnet the default IPv6 route into 2 network routes. The original default route was:
default via fe80::218:74ff:fe27:9640 dev eth0 proto kernel metric 1024
I tried adding the following 2 routes, which together should be equivalent to the default route:
ip -6 route add ::/1 dev eth0 via fe80::218:74ff:fe27:9640 ip -6 route add 80::/1 dev eth0 via fe80::218:74ff:fe27:9640
The first command went through, but the second one generated an error:
RTNETLINK answers: File exists
Why is this happening? What's the correct way to specify 2 network routes covering everything?