vyos works well , in my atom box.
but , I live in China, no ipv6 is avaiable .
so , I need to disable ipv6 , to speed up my network :
set system ipv6 disable
set system ipv6 blacklist
set firewall ipv6-src-route disable
set firewall ipv6-receive-redirects disable
commit
exit
reboot
After reboot on v 1.1.7 , we do not have any zone , nothing in section zone-policy and state-policy , fw don’t works 
Bug or feature ?? 
remove the following statement from your config
[color=#cccccc][size=small]set system ipv6 blacklist[/size][/color]
everything will be back to normal after reboot + ipv6 will still be disabled
save configuration somewhere beforehand, as i hit some strange bug|feature after removing this statement and reboot leading to the automagical disappearance of openvpn configuration.