Can you explain about the 4 post up routing?
Specially I don't understand the reason for 128.0.0.0 and 8000::
post_up () {
local tun=$1
ip route add 0.0.0.0/1 dev "${tun}" > /dev/null 2>&1
ip route add ::0/1 dev "${tun}" > /dev/null 2>&1
ip route add 128.0.0.0/1 dev "${tun}" > /dev/null 2>&1
ip route add 8000::/1 dev "${tun}" > /dev/null 2>&1
}
Can you explain about the 4 post up routing? Specially I don't understand the reason for 128.0.0.0 and 8000::