Host: Ubuntu 22.04
Error: Failed to start device “eth1”: Routed mode requires sysctl net.ipv6.conf.eno4.proxy_ndp=1
sysctl.conf
net.ipv6.conf.default.autoconf=1
net.ipv6.conf.eno4.autoconf=1
net.ipv6.conf.all.proxy_ndp=1
net.ipv6.conf.eno4.proxy_ndp=1
A sysctl -p or sysctl net.ipv6.conf.eno4.proxy_ndp=1 solves the problem.
Though net.ipv6.conf.eno4.proxy_ndp=1 is in sysctl.conf, after host reboot it doesnt apply:
sysctl -a | grep net.ipv6.conf.eno4.proxy_ndp
net.ipv6.conf.eno4.proxy_ndp = 0
I guess, it probabely is netplan, i tried sofar accept-ra: true/false and
also sysctl.d/ ipv6 privacy
net.ipv6.conf.default.use_tempaddr=0/1/2/
net.ipv6.conf.all.use_tempaddr=0/1/2
net.ipv6.conf.eno4.use_tempaddr=0/1/2
with no result sofar.
The old /etc/network/interfaces had an option autoconf 1
, i dont know what the replacement is in netplan.