Beware that most things on Linux systems are CaSe SenSiTive.
So are you sure the user is called PI and not pi?
You do are using a normal WIRED Ethernet connection?
Code: Select all
git clone --depth 1 git://roy.marples.name/dhcpcd.git cd dhcpcd ./configure make sudo make install
See it also goes up, down and up for me, but does add the IPv6 for me, even on Pi 4.