DHCPv6 failed to load configuration file
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 Hi! When the configuration file of DHCPv6 contains some option, DHCP6 failed to load it. interface igb0.832 { send dhcp-class-identifier "sagem"; send user-class "+FSVDSL_livebox.Internet.softathome.Livebox3"; send option-11 00:00:00:00:00:00:00:00:00:00:00:66:74:69:2F:XX:XX:Xx:XX:XX:XX:XX; script "/var/etc/dhcp6c_wan_script.sh"; }; id-assoc pd 0 { prefix-interface bridge0 { sla-id 0; sla-len 8; }; };And the result : Aug 27 08:14:03 dhcp6c 15929 failed to open /usr/local/etc/dhcp6cctlkey: No such file or directory Aug 27 08:14:03 dhcp6c 15929 failed initialize control message authentication Aug 27 08:14:03 dhcp6c 15929 skip opening control port Aug 27 08:14:03 dhcp6c 15929 /var/etc/dhcp6c_wan.conf 2: syntax error Aug 27 08:14:03 dhcp6c 15929 /var/etc/dhcp6c_wan.conf 2: fatal parse failure: exiting (1 errors)
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 Are those custom options you entered somewhere like a configuration override file? I don't see anywhere in the code that those options can be set through the GUI or user settings. The GUI would have no way to validate if your options are proper/correct for the dhcp6c client if you entered them manually in an override file. You'll have to fix your customizations to match what the client supports. 
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 I used the field "Send options" from the GUI. This options are mandatory to connect to Orange France Fiber in DHCPv6. 
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 Then there is something wrong with your formatting/names/values for those specific options. Again, it's all custom input so the GUI can't hold your hand there. 
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 I use exactly the same options in DHCPv4 without problem. I just changed option-90 by option-11. 
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 The DHCP clients are different for v4 ( dhclient) and v6 (dhcp6c), they do not necessarily allow or accept the same data. There is no guarantee that will work as you expect.
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 I found on the bug tracker a ticket on the same subject (but raw-option is used): https://redmine.pfsense.org/issues/8173 
 I hope you add this quickly !
