• Released pmgrpcd.py v3: a Streaming Telemetry collector and decoder
  for multi-vendor environments written in Python3. It supports gRPC
  transport along with Protobuf encoding as input and can output to
  Kafka with Avro encoding. Output to files and JSON encoding is
  currently supported sending data via ZMQ to pmtelemetryd first. It
  was tested working with data input from Cisco and Huawei routers
  and v3 replaces v2. Thanks to the Streaming Telemetry core team:
  Matthias Arnold ( @tbearma1 ), Camilo Cardona ( @jccardonar ),
  Thomas Graf ( @graf3 , @graf3net ), Paolo Lucente ( @paololucente ).
• Introduced support for the 'vxlan' VXLAN/VNI primitive in all traffic
  daemons (NetFlow/IPFIX, sFlow and libpcap/ULOG). Existing inner tunnel
  primitives (ie. tunnel_src_host, tunnel_dst_host, tunnel_proto, etc.)
  have been wired to the VXLAN decoding and new ones (tunnel_src_mac,
  tunnel_dst_mac, tunnel_src_port, tunnel_dst_port) were defined.
• BMP daemon: added support for Peer Up message namespace for TLVs
  (draft-ietf-grow-bmp-peer-up) and also support for Route Monitor
  and Peer Down TLVs (draft-ietf-grow-bmp-tlv).
• BGP, BMP daemons: in addition to existing JSON export, data can now
  be exported in Apache Avro format. There is also support for the
  Confluent Schema Registry.
• Introduced support for JSON-encoded Apache Avro encoding. While the
  binary-encoded Apache Avro is always recommended for any production
  scenarios (also to optionallly leverage Confluent Schema Registry
  support), JSON-encoded is powerful for testing and troubleshooting
  scenarios.
• sfprobe plugin: added support for IPv6 transport for sFlow export.
  sfprobe_agentip is an IP address put in the header of the sFlow
  packet. If underlying transport is IPv6, this must be configured to
  an IPv6 address.
• zmq_common.[ch]: Improved modularity of the ZMQ internal API and
  decoupled bind/connect from push/pull and pub/sub; also improved
  support for inproc sockets. All to increase the amount of use-cases
  covered by the API.
• bgp_peer_src_as_map: added 'filter' key to cover pmacctd/uacctd use
  cases.
• nfprobe, sfprobe plugins: introduced [sn]fprobe_index_override to
  override ifindexes dynamically determined (ie. by NFLOG) with values
  computed by [sn]fprobe_ifindex.
• MySQL, PostgreSQL plugins: added support for SSL/TLS connections by
  specifying a CA certificate (sql_conn_ca_file).
• Kafka, AMQP plugins: amqp_markers and kafka_markers have now been
  properly re-implemented when output encoding is Avro using an own
  Avro schema (instead of squatting pieces of JSON in the data stream
  for the very purpose).
• print plugin: introduced print_write_empty_file config knob (true,
  false) to create an empty output file when there are no cache entries
  to purge. Such behaviour was present in versions up to 0.14 and may
  be preferred by some to the new >= 1.5 versions behaviour. Thanks to
  Lee Yongjae ( @setup74 ) for the contribution.