anchor.diff:          (assertValueOneOf "EmitLPR" boolValues)
           (assertValueOneOf "EmitRouter" boolValues)
           (assertValueOneOf "EmitTimezone" boolValues)
  +        (assertValueOneOf "BindToInterface" boolValues)
         ];
   
         sectionIPv6SendRA = checkUnitConfig "IPv6SendRA" [
  
positive.code: 
        sectionDHCPServer = checkUnitConfig "DHCPServer" [
          (assertOnlyFields [
            "PoolOffset"
            "PoolSize"
            "DefaultLeaseTimeSec"
            "MaxLeaseTimeSec"
            "EmitDNS"
            "DNS"
            "EmitNTP"
  
negative.code:           "OtherInformation"
            "RouterLifetimeSec"
            "RouterPreference"
            "UplinkInterface"
            "EmitDNS"
            "DNS"
            "EmitDomains"
  