• Introduced the RPKI daemon to build a ROA database and check prefixes
  validation status and coverages. Resource Public Key Infrastructure
  (RPKI) is a specialized public key infrastructure (PKI) framework
  designed to secure the Internet routing. RPKI uses certificates to
  allow Local Internet Registries (LIRs) to list the Internet number
  resources they hold. These attestations are called Route Origination
  Authorizations (ROAs). ROA information can be acquired in one of the
  two following ways: 1) importing it using the rpki_roas_file config
  directive from a file in the RIPE Validator format or 2) connecting
  to a RPKI RTR Cache for live ROA updates; the cache IP address/port
  being defined by the rpki_rtr_cache config directive (and a few more
  optional rpki_rtr_* directives are available and can be reviwed in
  the CONFIG-KEYS doc). The ROA fields will be populated with one of
  these five values: 'u' Unknown, 'v' Valid, 'i' Invalid no overlaps,
  'V' Invalid with a covering Valid prefix, 'U' Invalid with a covering
  Unknown prefix. Thanks to Job Snijders ( @job ) for his support and
  vision.
• Introducing pmgrpcd.py, written in Python, a daemon to handle gRPC-
  based Streaming Telemetry sessions and unmarshall GPB data. Code
  was mostly courtesy by Matthias Arnold ( @tbearma1 ). This is in
  addition (or feeding into) pmtelemetryd, written in C, a daemon to
  handle TCP/UDP-based Streaming Telemetry sessions with JSON-encoded
  data. Thanks to Matthias Arnold ( @tbearma1 ) and Thomas Graf for
  their support and contributing code.
• pmacctd, uacctd: added support for CFP (Cisco FabricPath) and Cisco
  Virtual Network Tag protocols. Both patches were courtesy by Stephen
  Clark ( @sclark46 ).
• print plugin: added 'custom' to print_output. This is to cover two
  main use-cases: 1) use JSON or Avro encodings but fix the format of
  the messages in a custom way and 2) use a different encoding than
  JSON or Avro. See also example in examples/custom and new directives
  print_output_custom_lib and print_output_custom_cfg_file. The patch
  was courtesy by Edge Intelligence ( @edge-intelligence ).
• Introducing mpls_pw_id aggregation primitive and mpls_pw_id key in
  pre_tag_map to filter on signalled L2 MPLS VPN Pseudowire IDs.
• BGP daemon: added bgp_disable_router_id knob to enable/disable BGP
  Router-ID check, both at BGP OPEN time and BGP lookup. Useful, for
  example, in scenarios with split BGP v4/v6 AFs over v4/v6 transports.
• BGP, BMP daemons: translate origin attribute numeric value into IGP
  (i), EGP (e) and Incomplete (u) strings.
• plugins: added new plugin_exit_any feature to make the daemon bail
  out if any (not all, which is the default behaviour) of the plugins
  exits.
• maps_index: improved selection of buckets for index hash structure
  by picking the closest prime number to the double of the entries of
  the map to be indexed in order to achieve better elements dispersion
  and hence better performances.
• nfacctd: added support for IPFIX templateId-scoped (IE 145) sampling
  information.
• pmacctd, uacctd, sfacctd, nfacctd: added a -M command-line option to
  set *_markers (ie. print_markers) to true and fixed -A command-line
  option to set print_output_file_append to align to true/false.

• Read ChangeLog for full list of fixes.