With the current YAML, despite the disabled processing of RAs, you could add a dummy IPv6 address and thus let RAs be processed; but I'm going to revert that and instead provide a way to toggle RA processing.
With the current YAML, despite the disabled processing of RAs, you could add a dummy IPv6 address and thus let RAs be processed; but I'm going to revert that and instead provide a way to toggle RA processing.