28-Apr-2008
	- bugfix: set sa4->sin_port in initSocket() (bug introduced in 6.0)
6-Feb-2008
	6.0: support for IPv6
22-May-2007
	- bugfix: test mode was assuming that sp->ifIndex was == 1
	- stopped using multi-line strings (deprecated in compiler)
30-Aug-2005
	- query the MAC address so we can use it to discern input v output. Report full-duplex counters. Fill in input and output ports correctly. Now works with sFlowTrend.
	- options to allow ifIndex and ifSpeed to be overridden
	- improved 'usage' string
	- removed Pentium-specific include file cycles.h. It was only used for performance profiling anyway
1-Jan-2005
	- fixed bug in sflow_sampler.C:sfl_sampler_init() that was causing sfl_sampler_reset() to zero the dsi.  Also fixed
	  same problem in sfl_poller_init.  Thanks to Jagjit Choudray of Force 10 Networks for pointing out the problem.
17-Jun-2004
	- added support for SFLFLOW_SAMPLE_EXPANDED format (using preprocessor flag SFL_USE_32BIT_INDEX)
	- fixed bug in sflsp.C related to use of stripped field (since libpcap does not give us the FCS bytes)
	- SFLDataSource_instance now defined as structure, rather than bit-packed 64bit integer.
	- agent->jumpTable now implemented as hashTable.
	- support for additional MPLS and VLAN structures defined in sFlow v5
20-Nov-2003
	- used stripped field in sflsp.C
	- added sfl_sampler_tick and samplingRate backoff threshold
	- sfl_receiver_writeFlowSample and sfl_receiver_writeCountersSample now return the bytes written
18-Jul-2003
	- added stripped field to header sample structure
19-Jun-2003
	5.0: sFlow version 5
	- added nexthop address to gateway flow-sample structure (BGP next hop)
13-Feb-2003
	5.0: sFlow version 5 datagram
	- ds_class, ds_index and instance now all encoded together in one 64-bit integer (SFLDataSource_instance)
	- sampler object now split into sampler and poller
	- receiver (formerly "target") now handles reservation timeout, in accordance with new MIB
	- all "INM", "inm" and "inmon" prefixes replaced with "SFL", "sfl" and "sflow" respectively
	- flow and counter samples now submitted using linked-list of "elements"
	- new MPLS and NAT extended flow information elements
	- URL element includes additional "host" fields
	- agent_sub_id field allows multiple sFlow agents distributed on one switch
	- tag-length-value encoding at the element level (INMTarget encoder calculates all length fields)
	- SFLSampled_header.header_bytes now submitted using pointer, which eliminates a copy and allows for samples of arbitrary length (although encoder will reject a sample if it is too long to fit in one datagram).
	- generic counter block no longer included in specific counter-blocks. Thus to submit generic+ethernet counters requires two counter block elements in the linked list.
	
	
5-Aug-2002
	4.0: support for sFlow version 4 datagram (RFC 3176)
	
