ns-3 RELEASE NOTES

This file contains ns-3 release notes (most recent releases first).  

All of the ns-3 documentation is accessible from the ns-3 website: 

http://www.nsnam.org including tutorials: http://www.nsnam.org/tutorials.html

Consult the file CHANGES.html for more detailed information about changed

API and behavior across ns-3 releases.

Release 3-dev

=============

Availability

------------

This release is not yet available.

Supported platforms

-------------------

This release is intended to work on systems with the following minimal

requirements (Note:  not all features available on all platforms):

This release has been tested on the following platforms:

New user-visible features

-------------------------

- (tcp) Added TCP-LP as congestion control module

- (lr-wpan) Extended addressing mode is now supported.

- (tcp) Implemented the core functionality of TCP Pacing.

- (internet) Ipv[4,6]AddressGenerator can now check if an address or a network is allocated.

Bugs fixed

----------

- Bug 2505 - network:  Avoid asserts in Header/Trailer deserialization

- Bug 2656 - wifi: Minstrel and MinstrelHt provide different results for 802.11a/b/g

- Bug 2653 - tcp: Avoid saving smaller TS in case of packet reordering

- Bug 2764 - wifi: WifiSpectrumModelId doesn't distinguish 11ax from legacy

- Bug 2766 - core: Modify logging for int64x64 to avoid stack overflow

- Bug 2768 - lte: LteUeNetDevice has a null MAC address

- Bug 2807 - energy: GetTotalEnergyConsumption is not updated correctly

- Bug 2809 - wifi: Wifi doesn't fully stop when energy is depleted

- Bug 2820 - wifi: segmentation fault when Rrpaa wifi manager is used

- Bug 2824 - ICMP opcode fr fragment timeout drop is wrong

- Bug 2828 - OLSR simple P2P example produces wrong results

- Bug 2827 - wifi: Active scanning not working with 802.11n/ac/ax

- Bug 2836 - wifi: Missing VHT information in radiotap header when A-MPDU is used

- Bug 2838 - wifi: ht-wifi-network crashes with RTS/CTS enabled and frequency set to 2.4GHz

- Bug 2843 - spectrum, wifi: Incorrect channel width and center frequency provided for non-HT PPDUs when building SpectralDensity

- Bug 2848 - wifi: Association ID not correctly set upon association

- Bug 2854 - wifi: he-wifi-network crashes when frequency is set at 2.4 GHz

Known issues

------------

In general, known issues are tracked on the project tracker available

at http://www.nsnam.org/bugzilla/

Release 3.27

============

Availability

------------

This release is available from:

https://www.nsnam.org/release/ns-allinone-3.27.tar.bz2

Supported platforms

-------------------

This release is intended to work on systems with the following minimal

requirements (Note:  not all features available on all platforms):

- g++-4.9 or later (Note:  this is an upgraded requirement from ns-3.26)

- Apple LLVM version 7.0.2 or later 

- clang-3.3 or later

- Python 2.7 (Python 2 series) or Python 3.4 (Python 3 series) or later

This release has been tested on the following platforms:

- Ubuntu 17.04 (64 bit) with g++-6.3.0

- Ubuntu 16.04 (64 bit) with g++-5.4.0

- Ubuntu 14.04.5 (64 bit) with g++-4.9.4

  - Note: the default g++ version (4.8) must be upgraded 

- Fedora Core 26 (64 bit) with g++-7.1.1

- Fedora Core 22 (64 bit) with g++-5.3.1

- CentOS/RHEL 7.4 (64-bit) with g++-6.3.1

  - Note: the default g++ version (4.8) must be upgraded 

- CentOS/RHEL 6.8 (64-bit) with g++-4.9.2

  - Note: the default g++ version (4.4) must be upgraded 

  - Note: the default Python version (2.6) must be upgraded 

- OS X Sierra 10.12.6 with Xcode 9.0 and Apple LLVM version 9.0.0

- OS X El Capitan 10.11.6 with Xcode 8.2.1 and Apple LLVM version 8.0.0

- OS X Yosemite 10.10.5 with Xcode 7.2.1 and Apple LLVM version 7.0.2

- Windows 10 Linux Subsystem with g++-5.4.0

New user-visible features

-------------------------

- (build) Modules can also be located in contrib/ directory (as well as src/)

- (core) Logging timestamp precision has been improved

- (lte) LTE carrier aggregation feature according to 3GPP Release 10 is now supported.

- (traffic-control) CsmaNetDevice, SimpleNetDevice and WifiNetDevice support flow control.

- (traffic-control) Added support for queue discs to mark packets, and ECN support has been added to RED

- (traffic-control) A multi-queue aware queue disc modelled after Linux mq

- (traffic-control) Added support for detailed statistics output of queue discs

- (traffic-control) Added support for tracing queue sojourn times

- (tcp) The SACK option and the RFC 6675 loss recovery algorithm are now supported.

- (tcp) A LEDBAT model has been added.

- (wifi) 802.11ax High Efficiency (HE) physical layer modes are now supported.

- (wifi) A new RRPAA rate control mechanism has been added.

- (wifi) A new trace source for TXOP duration is now supported

- (wifi) Frame capture effect can now be modelled

- (uan) World Ocean System Simulation (WOSS) integration, and new PER models

Bugs fixed

----------

- Bug 1034 - wifi: No trace source for packet dropping from WifiMacQueue

- Bug 2007 - uan: Remove deprecation on SetRxThresholdDb

- Bug 2048 - lte: Fix scheduler resource allocation when CQI==0 (out of rante)

- Bug 2133 - tcp: Avoid assert when receiving data in FIN_WAIT_1 or _2 states

- Bug 2214 - tcp: Use of ScheduleNow only in selected part of the code

- Bug 2221 - network: Remove constraint on size of ns3::Packet Tag objects

- Bug 2256 - tcp: bytes in flight now updated in TcpTxBuffer

- Bug 2263 - tcp: Support processing of multiple TCP options

- Bug 2285 - tcp: Loss of ack of SYN can cause improper connection setup

- Bug 2367 - wifi: BlockAckManager does not remove iterators to freed items

- Bug 2450 - propagation: LogDistancePropagationLossModel is not continuous

- Bug 2456 - lte: MemberCschedSapProvider and Member CschedSapProvider templates

- Bug 2464 - spectrum: Store spectrum conversion matrix in CSR format

- Bug 2467 - spectrum: Do not schedule StartRx for receivers on other models

- Bug 2471 - wifi: unable to disable Block Ack agreement for 802.11n 

- Bug 2477 - wifi: DCF manager assert

- Bug 2485 - traffic-control: Check queue full before checking RED thresholds

- Bug 2491 - wifi: replace DcfManager::MY_DEBUG

- Bug 2492 - uan: Make use of RxGain attribute in UanPhyGen class

- Bug 2511 - wifi: HT Greenfield is not working

- Bug 2512 - traffic-control: Byte mode not configured correctly for RED test

- Bug 2513 - core: ParetoRandomVariable needs a "scale", not a "mean" attribute

- Bug 2518 - build: Suppress printing of list of modules for Python programs

- Bug 2519 - lte: m_windowOffsetsMap.end () dereference

- Bug 2520 - examples: TCP variant not configured in wifi-tcp.cc

- Bug 2521 - internet: Include ipv6-option.h in wscript

- Bug 2523 - lte: Generate the RLC PDU properly

- Bug 2527 - internet: PrintRoutingTable adds an optional Time::Units parameter

- Bug 2528 - wifi: 802.11n RIFS cannot be enabled

- Bug 2529 - wifi: Missing trace for Block ACK timeout or missing MPDUs

- Bug 2530 - aodv: Rename aodv::SetBalckListTimeout to aodv::SetBlackListTimeout

- Bug 2531 - lte: Set HARQ feedback default value to avoid false retrasmissions

- Bug 2532 - wifi: Inconsistencies between 802.11n MCS and NSS value in TXVECTOR

- Bug 2533 - wifi: Provide better 802.11n/ac PHY abstraction for SIMO/MISO/MIMO

- Bug 2534 - traffic-control: ARED and PIE examples should return 1 upon exit

- Bug 2535 - utils: memory leak in bench-simulator.cc

- Bug 2536 - wimax: fixed dead assignment and potential memory leak in wimax

- Bug 2537 - traffic-control: Fix dead assigment on CoDel::DoDequeue

- Bug 2538 - tap-bridge: fixed dead assignment on tap-bridge

- Bug 2540 - mesh: fixed dead assignment on mesh/ie-dot11s-perr

- Bug 2541 - wifi: preamble not assigned correctly

- Bug 2542 - wifi: dead assignment on wifi mac-low

- Bug 2543 - lte: Fix when EstimateUlSinr returns NO_SINR

- Bug 2545 - flow-monitor: Optimized build fails for flow-monitor

- Bug 2547 - tcp: dead assignments on various tcp congestion controls

- Bug 2551 - wifi: wifi preamble should be part of TXVECTOR

- Bug 2552 - wifi: Remove code duplication between Yans and Spectrum

- Bug 2554 - wave: Fix static analysis warning

- Bug 2556 - csma, point-to-point: Avoid modification of transmitted packets

- Bug 2557 - point-to-point:  Fix dead assignments in queue-discs-benchmark

- Bug 2559 - tcp: TCP advertised window still incorrect

- Bug 2561 - tcp: TCP can not use Connect after a BindToNetDevice

- Bug 2563 - bindings: pybindgen version check to >= minimum version required

- Bug 2564 - wifi: Simulation crashes when CtsTimeout triggered for A-MPDU

- Bug 2565 - tcp: Do not wait for 2*MSL to notify socket close

- Bug 2566 - wifi: BlockAckManager::GetNRetryNeededPackets missing some packets

- Bug 2568 - examples: Avoid enumerating TCP variants

- Bug 2577 - wifi: crashes when A-MPDU and multiple TOS used, upon CTS timeout

- Bug 2578 - wifi: Unexpected assert "Internal collision but no packet in queue"

- Bug 2584 - wifi: MacLow triggers StartNext even if there is no TXOP

- Bug 2587 - tcp: Avoid overflow in htcp.cc

- Bug 2590 - traffic-control: Minor enhancements in red-queue-disc{.h, .cc}

- Bug 2591 - wifi: 802.11e Block Ack cannot be enabled on HT/VHT stations

- Bug 2594 - wifi: vht-wifi-network very low throughtput at MCS 6, 160 MHz, SGI

- Bug 2596 - network: EthernetTrailer::GetFcs() should be const

- Bug 2601 - wifi: HT stations should use 40 MHz width if configured  80 or 160z

- Bug 2604 - wifi: QosData frames separation with Block Ack enabled

- Bug 2605 - wifi: HT/VHT station sending to legacy results in null throughput

- Bug 2606 - wifi: Ideal rate manager for HT/VHT station to a legacy AP

- Bug 2607 - wifi: Correct overflow in channel width loop in Minstrel HT

- Bug 2613 - tcp: MaxRxSequence () is sometimes too large

- Bug 2614 - internet: RIP header version should be set to 2

- Bug 2615 - wifi: When the TXOP limit is nonzero, fragment in some cases

- Bug 2617 - traffic-control: PfifoFastQueueDisc::Peek all bands

- Bug 2621 - wifi:  Fix mismatch between log message and action

- Bug 2624 - lte: Inconsistent coding of type and naming

- Bug 2627 - internet: Ipv6RawSocket does not honor the bound interface

- Bug 2628 - wifi: Simulation crashes because of an out of range TID

- Bug 2629 - wifi: Assert failure in MinstrelHtWifiManager::GetLowestIndex

- Bug 2632 - lte: Build error due to uninitialized variable in rem helper

- Bug 2646 - lte: lena-simple-eps-emu example will never work

- Bug 2647 - wifi: ideal-wifi-manager-example crashes when NSS > 1

- Bug 2649 - tcp: Disabling TCP SACK doesn't fall back to NewReno

- Bug 2654 - wifi: Rraa wifi manager cannot be used with 802.11b

- Bug 2655 - wifi: A-MPDU simulation using TCP sometimes fails

- Bug 2658 - core: Avoid unexpected TracedValue type conversions

- Bug 2660 - traffic-control: TrafficControlHelper::Default configuration

- Bug 2661 - wave: Fix outdated class references in documentation

- Bug 2665 - internet: Ipv4RawSocket can not send to broadcast or multicast

- Bug 2666 - lte: Remove deprecated variables/config paths

- Bug 2668 - various: Make template classes use NS_LOG_* macros

- Bug 2671 - internet: ArpCache::Entry::SetMacAddress is misspelled

- Bug 2673 - wifi: run-time channel switch does not update WiFi spectrum model

- Bug 2675 - traffic-control: Use correct string value in PIE example

- Bug 2716 - tcp: TCP socket ignoring FIN flag when in FIN_WAIT state

- Bug 2717 - internet: Fix mask for Ipv4RoutingTableEntry::CreateDefaultRoute

- Bug 2722 - wifi: 802.11g sends DSSS spectrum signals inappropriately

- Bug 2731 - lte: Allow retranmission in RLC AM when PR expires, vtS overflows

- Bug 2732 - applications: BulkSend Tx trace is fired too much

- Bug 2733 - wifi: Ideal wifi manager cannot handle NSS higher than 1

- Bug 2741 - internet: IPv4 fragmentation fails on last fragment fragmentation

- Bug 2744 - wifi: 802.11n/ac with RTS/CTS crashes for a large number of nodes

- Bug 2751 - traffic-control: QueueDisc::Enqueue() order of operations

- Bug 2756 - internet: Ipv4AddressGenerator underestimates available addresses

- Bug 2757 - wifi: 802.11n/ac/ax maximum TXOP is not properly enforced

- Bug 2758 - internet: IPv4 sockets bound to unicast receiving subnet broadcast

- Bug 2759 - internet: Packet conversion from broadcast to subnet-directed

- Bug 2760 - internet: OLSR uses unicast-bound sockets to receive broadcasts

- Bug 2761 - wifi: Packet has no Traffic ID for CTS frames when A-MPDU is used

- Bug 2762 - internet: BindToNetDevice behaviour is not coherent with Linux

- Bug 2763 - wifi: management packets in PCAPs are marked as wrong by Wireshark

- Bug 2769 - tcp: Set ssthresh correctly upon RTO

- Bug 2771 - wifi: IdealWifiManager problems under different number of antennas

- Bug 2776 - wifi: Fix segmentation fault in MacLow

- Bug 2777 - lte: Save bearer info in m_drbMap, needed for handover request

- Bug 2781 - tcp: Do not go beyond limit in TcpTxBuffer

- Bug 2783 - wifi: MonitorSnifferRx SNR is invariant to RxNoiseFigure

- Bug 2786 - lte:  Remove unimplemented declaration

- Bug 2796 - tcp: NSC TCP transmission flow control not working

Known issues

------------

In general, known issues are tracked on the project tracker available

at http://www.nsnam.org/bugzilla/

Release 3.26

============

Availability

------------

This release is available from:

https://www.nsnam.org/release/ns-allinone-3.26.tar.bz2

Supported platforms

-------------------

This release is intended to work on systems with the following minimal

requirements:

- g++-4.8 or later

- clang-3.3 or later

- Python 2.7 (Python 2 series)

- Python 3.4 or later (Python 3 series)

This release has been tested on the following platforms:

- Ubuntu 16.04 (64 bit) with g++-5.4.0

- Ubuntu 14.04 (64 bit) with g++-4.8.2

- Fedora Core 24 (64 bit) with g++-6.1.1

- Fedora Core 22 (32 bit) with g++-5.3.1

- Fedora Core 21 (64 bit) with g++-4.9.2

- CentOS/RHEL 6.7 (64-bit) with g++-4.9.2

- OS X El Capitan 10.11.4 with Xcode 7.3.1 and Apple LLVM version 7.3.0

- OS X El Capitan 10.11.3 with Xcode 7.2.1 and Apple LLVM version 7.0.2

New user-visible features

-------------------------

- (aodv) The node search radius is increased progressively (as per standard). 

- (build system) New --check-config option to waf to reprint the summary 

  of optional features which are configured.

- (build system) C++11 features are now supported in the codebase

- (core) DES Metrics support; see the API docs for class DesMetrics.

- (internet) Added TCP Vegas, Scalable, Veno, Illinois, Bic, YeAH, and

  H-TCP congestion control algorithms

- (internet) Add a TOS field to the InetSocketAddress class

- (network) SocketAddressTag has been removed from the codebase.

  Users can use RecvFrom (for UDP) or GetPeerName (for TCP) instead.

- (traffic control) Added the FQ-CoDel and PIE queue disc models

- (traffic control) Introduce Byte Queue Limits (BQL)

- (wifi) A new SpectrumWifiPhy physical layer model, making use of the 

  ns-3 spectrum framework, has been introduced.  The current version of

  this model matches the API and behavior of YansWifiPhy closely, but

  over time is expected to support a different PHY abstraction and error

  models.

- (wifi) IEEE 802.11e TXOP limits are now enforced for different access

  categories when a QoS MAC is configured.

Bugs fixed

----------

- Bug 231 - Avoid adding SocketAddressTag (at all)

- Bug 1579 - Final fix for segfault caused by EDCA fragmentation

- Bug 1797 - Rate adaptation algorithms don't work with new 802.11n/ac standards

- Bug 1911 - AODV doesn't work with more than one NetDevice

- Bug 1939 - Aggregating the same object to two nodes produce unexpected results

- Bug 1977 - v4Ping verbose output when not explicitly stopped

- Bug 2057 - ARP and Ndisc caches should be updated by receiving valid L3 packets

- Bug 2069 - Avoid integer overflow in ByteTagList

- Bug 2102 - Ipv4GlobalRouting confused by bridged interfaces

- Bug 2123 - AODV doesn't use / honor IP TTL in the RREQ / RREP

- Bug 2149 - support deprecating attributes and trace sources

- Bug 2222 - incorrect EDCA behavior in case of internal collision

- Bug 2270 - Support -std=c++11 by default

- Bug 2306 - Raise DCF IsBusy() condition for CCA busy

- Bug 2307 - Get rid of m_receivedAtLeastOneMpdu flag

- Bug 2308 - PacketTag instead of ByteTag in LTE PDCP/RLC

- Bug 2344 - Attribute names can't have spaces

- Bug 2346 - sixlowpan CompressionThreshold limit can be violated

- Bug 2347 - LrWpan Ascii traces are hooked to the wrong traces.

- Bug 2351 - Fix symbol rate calculation for channels with 10 and 5 MHz width

- Bug 2352 - Add 'drop oldest' drop policy to WifiMacQueue

- Bug 2369 - Generate backoff if DCF requests access during AIFS

- Bug 2375 - Flowmonitor parse crashes when no pkt is received

- Bug 2376 - New A-MPDU might not be received if MPDUs of a previous A-MPDU are lost

- Bug 2377 - SocketIpTosTag and SocketIpv6TclassTag may be added twice in UDP

- Bug 2378 - A-MPDU variables are not correctly reset in YansWifiPhy when a PLCP preamble/header failed

- Bug 2379 - BlockAckRequest should not be part of single-TID A-MPDUs

- Bug 2380 - EdcaTxopN fails to retrieve TID for ADDBA requests, ADDBA responses and DELBA frames

- Bug 2383 - IPv4 header for reassembled packets reports a wrong payload size

- Bug 2386 - Move UanPhyGen out of Tx mode when energy depleted

- Bug 2387 - Fix waf --check-profile command

- Bug 2390 - WaypointMobilityModel::AddWaypoint lazy notify schedules an event using absolute time (should be relative time)

- Bug 2392 - SYN segment advertised window should not be scaled

- Bug 2395 - Upgrade pybindgen for Python >= 3.5

- Bug 2396 - move utility functions to WifiPhy

- Bug 2397 - add backoff and cw tracing to EDCA

- Bug 2398 - add SNR tag to beacons and probe responses

- Bug 2401 - Deserialize correctly the len of options in TcpHeader

- Bug 2402 - IPv4 Interface forwarding state is not honored

- Bug 2406 - Poor 802.11g performance in ad-hoc mode

- Bug 2408 - Simulation fails when 802.11n/ac is running with HT Minstrel and pcap enabled

- Bug 2412 - align WifiPhy frequency and channel number

- Bug 2414 - UdpSocket doesn't call NotifyConnectionFailed

- Bug 2419 - BsmApplication should use RecvFrom and not SocketAddressTag

- Bug 2420 - Remove code duplication between Wifi and Wave modules

- Bug 2421 - Forbid negative RemainingAmpduDuration for the last A-MPDU

- Bug 2425 - UdpSocketImpl simplification

- Bug 2427 - 802.11ac selects wrong slot duration

- Bug 2433 - Bic does not copy private parameters

- Bug 2436 - Do not send block ack if received A-MPDU not addressed to station

- Bug 2438 - Routing protocols should stop processing packets coming from a non-forwarding interface

- Bug 2439 - SixLowPan Compression kind need to be casted to int in the Print function

- Bug 2440 - SocketIpTosTag might be added twice if a packet is sent multiple times

- Bug 2442 - ConfigStore crash if object container has null item

- Bug 2443 - Increase application counters to accommodate Gbps transfer rates

- Bug 2444 - PcapHelper DataLinkType enum should have a name

- Bug 2445 - Out of bounds array access in Minstrel HT rate control

- Bug 2446 - Fix comma delimiter instead of pipe delimiter in Attributes

- Bug 2448 - Run examples in traffic control test suite

- Bug 2452 - Add Object::IsInitialized method

- Bug 2454 - DsrRouting::NotifyDataReceipt is also triggered for wifi management packets

- Bug 2461 - TCP BIC should copy private members

- Bug 2468 - Simulation with A-MPDU enabled hangs when fragmentation threshold is smaller than MSDU size

- Bug 2469 - send Block Ack Request upon short/long retry failures

- Bug 2474 - UdpEchoClient does not call Connect with addresses of type Inet[6]SocketAddress

- Bug 2477 - Partial fix for wifi asserts when transmit cancels a reception

- Bug 2479 - Flow monitor does not a have a "DROP_QUEUE_DISC" drop reason

- Bug 2480 - Use SQLite prepared statements

- Bug 2481 - Missing or incorrect group names

- Bug 2484 - Corrected the exit from CA_LOSS state in TCP

- Bug 2486 - NextTxSequence was not traced back from TCB

- Bug 2488 - Error in UanPdp::SumTapsFromMaxNc

- Bug 2496 - BSS membership selector in SupportedRates

- Bug 2500 - Ipv[4,6]RawSocket ignores IpTtl tag

- Bug 2507 - ConfigStore RawTextConfigLoad doesn't reset stream error state

- Bug 2508 - Duplicate of bug 2507

- Bug 2514 - The maximum transmission time for VHT A-MPDUs is not correct 

- No BugId - Arp logging: label with request or reply properly

Known issues

------------

In general, known issues are tracked on the project tracker available

at http://www.nsnam.org/bugzilla/

Release 3.25

============

Availability

------------

This release is available from:

https://www.nsnam.org/release/ns-allinone-3.25.tar.bz2

Supported platforms

-------------------

This release has been tested on the following platforms:

- Ubuntu 15.10 (64 bit) with g++-5.2.1

- Ubuntu 14.04 (64 bit) with g++-4.8.2

- Fedora Core 23 (64 bit) with g++-5.3.1

- Fedora Core 22 (32 bit) with g++-5.1.1

- Fedora Core 21 (64 bit) with g++-4.9.2

- Arch Linux (64 bit) with g++-5.3.0 and clang++-3.7.1

- CentOS/RHEL 6.7 (64-bit) with g++-4.4.7

- OS X El Capitan 10.11.4 with Xcode 7.3 and Apple LLVM version 7.3.0

- OS X El Capitan 10.11.3 with Xcode 7.2.1 and Apple LLVM version 7.0.2

- OS X Yosemite 10.10.5 with Xcode 7.2.1 and Apple LLVM version 7.0.2

- FreeBSD 10.2-RELEASE (64 bit) with clang-3.4.1

New user-visible features

-------------------------

- (internet) The native TCP implementation has been refactored, for the 

  following improvements:  

    1) congestion control has been aligned with the Linux architecture, 

       to facilitate easier coding of new congestion control algorithms

        or porting implementations from the Linux kernel, 

    2) Fast Retransmit and Fast Recovery algorithms, compliant to RFCs, are 

       shared by all TCP variants, unlike previous releases. 

    3) TCP Hybla and TCP HighSpeed variants have been added.

- (routing) The PrintRoutingTable* functions now print the following information

  each time they are called: 

    1) the node ID, 

    2) the global time, 

    3) the local time (allowing for future introduction of per-node clocks), 

    4) the routing protocol type

- (traffic control) A traffic control sublayer has been added with the aim of

  introducing an equivalent of the Linux Traffic +Control infrastructure into 

  ns-3. This layer sits in between the NetDevices (L2) and the network 

  protocol (e.g. IP). It is in charge of processing packets and performing 

  actions on them: scheduling, dropping, marking, policing, etc.  Initial

  support for flow control has been added to the PointToPointNetDevice;

  backward-compatible support for other device types is provided.

- (traffic control) A three band priority queue modelled after Linux

  pfifo_fast queueing discipline has been added.

- (traffic control) Adaptive RED extensions have been added to the RED model

- (wifi) A number of changes related to improving support for 802.11n/ac

  models have been introduced.

  1) Two rate controls compatible with High Throughput (HT) Wi-Fi modes

     (e.g. 802.11n/ac), Ideal and MinstrelHT, have been added  

  2) Support for multiple spatial streams (MIMO) using existing SISO

     error models

  3) The WiFi helper API for the WifiMac sublayer, and the configuration

     of HT modes and parameters, has been simplified

  4) Better support for backward compatibilty with legacy modes

- (wifi) 802.11g was made backward compatible with 802.11b networks

- (internet) L4 protocols (e.g., TCP, UDP, ICMP, etc.) can be demultiplexed 

  by IP according to the incoming interface. In other words, it is now 

  possible to use specialized L4 protocols according to the interface.

- (internet) Ipv6Address::IsAllHostsMulticast() is now deprecated. 

  FF02::3 is not in the official reserved IPv6 multicast address list.

- (internet) Ipv6Address::IsAll[Nodes,Routers]Multicast() now checks the 

  address scope beyond the simple link-local. Nodes are checked for 

  Interface-Local, Link-Local and Realm-Local, Routers for the above plus 

  Site-Local.

- (internet) Ipv6 routing protocols must now *not* forward packets to upper 

  layers unless for extremey specific cases. The Ipv6L3protocol handles 

  almost all the packets directed to the host.

- (internet) Ipv6 can now reject packets directed to an address not configured 

  on the interface they are received from (Strong End System Model, RFC 1222).

- (internet) UDP and Ipv6 RAW sockets can now join Ipv6 multicast groups.

  Incoming packets will be filtered according to if there's a socket listening 

  to that group. Source filtering is left to the application.

- (network) ns-3 is now capable of serializing cooked (SLL) headers. This is 

  used in DCE to allow the generation of pcap directly readable by wireshark.

- (internet) It is now possible to set custom values for RipNg Link Down 

  (standard is 16).

- (internet) permanent (static) NDISC entries can be created for IPv6

- (internet) IPv4 RIPv2 protocol model is now available.

Bugs fixed

----------

- Bug 1132 - useless for loops in block-ack-test-suite.cc

- Bug 1205 - EDCA is incorrectly modelled as DCF

- Bug 1571 - TCP zero-window and flow control window updates by the receiver

- Bug 1631 - Acoustic modem Energy consumption calc is wrong

- Bug 1761 - Rounding with olsr::EmfToSeconds

- Bug 1783 - BytesInFlight value fixed

- Bug 1954 - Serialized size of wifi-net-device differ for TX and RX trace

- Bug 1999 - PointToPointRemoteChannel invokes PointToPointChannel constructor

- Bug 2003 - Missing DSSS short PLCP preamble

- Bug 2041 - TCP RTO needs unit tests

- Bug 2068 - Timestamp option conforms to RFC 7323