If `dhcpv6-options` is configured without requesting a DHCPv6 address or PD, the DHCPv6 client runs with an empty configuration. This is because the `dhcpv6pd` variable on line 1106 of `python/vyos/ifconfig/interface.py` is assigned an empty `dict`.
To reproduce boot the ISO and configure as follows:
```
set interfaces ethernet eth0 dhcpv6-options
commit
```
Verify `dhcp6c` is running by running `ps ax | grep dhcp6c`.