It's been almost two years since I used this workaround and it no longer works.
I use these commands:
### NO LONGER WORKS, IDK WHY ###
setsid /usr/tb_userspace tb $TBSERVIPV4 $TBCLIPV4 sit > /dev/null 2>&1 &
sleep 3s #ugly, but doesn't seem to work at startup otherwise
ifconfig tb up
ifconfig tb add $TBIPV6NET
ifconfig tb mtu 1480
route -A inet6 add ::/0 dev tb
It's been almost two years since I used this workaround and it no longer works.
I use these commands: