Internet Assigned Numbers Authority

                                                               C-DNS DNS Capture Format

   Created
           2019-01-07

   Last Updated
           2020-12-09

   Available Formats
           [IMG]
           XML [IMG]
           HTML [IMG]
           Plain text

   Registries included below

     * C-DNS Transports
     * C-DNS Storage Flags
     * C-DNS Response Flags
     * C-DNS Address Event Types

C-DNS Transports

   Registration Procedure(s)

 Expert Review

   Expert(s)

 Jim Hague, Sara Dickinson, John Dickinson

   Reference
           [RFC8618]

   Note

 In version 1.0 of C-DNS [RFC8618], there is a field to identify the
 type of DNS transport.  This field is 4 bits in size.


   Available Formats
           [IMG]
           CSV

   Identifier          Name          Reference
   0          UDP                    [RFC8618]
   1          TCP                    [RFC8618]
   2          TLS                    [RFC8618]
   3          DTLS                   [RFC8618]
   4          HTTPS                  [RFC8618]
   5-14       Unassigned
   15         Non-standard transport [RFC8618]

C-DNS Storage Flags

   Registration Procedure(s)

 Expert Review

   Expert(s)

 Jim Hague, Sara Dickinson, John Dickinson

   Reference
           [RFC8618]

   Note

 In version 1.0 of C-DNS [RFC8618], there is a field describing
 attributes of the data recorded.  The field is a CBOR [RFC8949]
 unsigned integer holding bit flags.


   Available Formats
           [IMG]
           CSV

   Bit        Name                     Description               Reference
   0    anonymized-data  The data has been anonymized.           [RFC8618]
   1    sampled-data     The data is sampled data.               [RFC8618]
   2    normalized-names Names in the data have been normalized. [RFC8618]
   3-63 Unassigned

C-DNS Response Flags

   Registration Procedure(s)

 Expert Review

   Expert(s)

 Jim Hague, Sara Dickinson, John Dickinson

   Reference
           [RFC8618]

   Note

 In version 1.0 of C-DNS [RFC8618], there is a field describing
 attributes of the responses recorded.  The field is a CBOR [RFC8949]
 unsigned integer holding bit flags.


   Available Formats
           [IMG]
           CSV

   Bit     Name             Description          Reference
   0    from-cache The Response came from cache. [RFC8618]
   1-63 Unassigned

C-DNS Address Event Types

   Registration Procedure(s)

 Expert Review

   Expert(s)

 Jim Hague, Sara Dickinson, John Dickinson

   Reference
           [RFC8618]

   Note

 In version 1.0 of C-DNS [RFC8618], there is a field identifying types
 of the events related to client addresses.  This field is a CBOR
 [RFC8949] unsigned integer.  There  is a related optional field
 "ae-code", which, if present, holds an additional CBOR unsigned
 integer giving additional information specific to the event type.


   Available Formats
           [IMG]
           CSV

         Identifier                 Event Type               ae-code contents      Reference
   0                      TCP reset                      None                      [RFC8618]
   1                      ICMP time exceeded             ICMP code [icmpcodes]     [RFC8618]
   2                      ICMP destination unreachable   ICMP code [icmpcodes]     [RFC8618]
   3                      ICMPv6 time exceeded           ICMPv6 code [icmpv6codes] [RFC8618]
   4                      ICMPv6 destination unreachable ICMPv6 code [icmpv6codes] [RFC8618]
   5                      ICMPv6 packet too big          ICMPv6 code [icmpv6codes] [RFC8618]
   6-18446744073709551615 Unassigned

   Licensing Terms