6.23
  - Support updating extensions when the set is full
    (fixes bugzilla id #880)

6.22
  - hash:mac type added to ipset
  - skbinfo extension: send nonzero extension elements only to userspace
  - netfilter: Convert pr_warning to pr_warn (Joe Perches)
  - netfilter: ipset: Add skbinfo extension support to SET target.
    (Anton Danilov)
  - netfilter: ipset: Add skbinfo extension kernel support for the list
    set type. (Anton Danilov)
  - netfilter: ipset: Add skbinfo extension kernel support for the hash
    set types. (Anton Danilov)
  - netfilter: ipset: Add skbinfo extension kernel support for the
    bitmap set types. (Anton Danilov)
  - netfilter: ipset: Add skbinfo extension kernel support in the ipset
    core. (Anton Danilov)
  - Fix static checker warning in ip_set_core.c (reported by Dan Carpenter)
  - Fix warn: integer overflows 'sizeof(*map) + size * set->dsize'
    (reported by Dan Carpenter)
  - net/netfilter/ipset: Resolve missing-field-initializer warnings
    (Mark Rustad)
  - netnet,netportnet: Fix value range support for IPv4 (Sergey Popovich)
  - Removed invalid IPSET_ATTR_MARKMASK validation (Vytas Dauksa) 

6.21.1
  - netfilter: ip_set: rename nfnl_dereference()/nfnl_set()
    (Patrick McHardy)

6.21
  - ipset: add forceadd kernel support for hash set types (Josh Hunt)
  - netfilter: ipset: move registration message to init from net_init
    (Ilia Mirkin)
  - kernel: uapi: fix MARKMASK attr ABI breakage (Florian Westphal)
  - Prepare the kernel for create option flags when no extension is needed
  - add markmask for hash:ip,mark data type (Vytas Dauksa)
  - add hash:ip,mark data type to ipset (Vytas Dauksa)
  - ipset: remove unused code (Stephen Hemminger)
  - netfilter: ipset: Add hash: fix coccinelle warnings (Fengguang Wu)
  - Typo in ip_set_hash_netnet.c fixed (David Binderman)
  - net ipset: use rbtree postorder iteration instead of opencoding
    (Cody P Schafer)
  - ipset: Follow manual page behavior for SET target on list:set
    (Sergey Popovich)

6.20.1
  - netfilter: ipset: remove duplicate define (Michael Opdenacker)
  - net->user_ns is available starting from 3.8, add compatibility
    checking (reported by Jan Engelhardt)
  - Fix memory allocation for bitmap:port (reported by Quentin Armitage)
  - Avoid clashing with configured kernel in [CONFIG_]IP_SET_MAX
  - The unnamed union initialization may lead to compilation error
    (reported by Husnu Demir)
  - Use dev_net() instead of the direct access to ->nd_net (reported by
    the kbuild test robot)

6.20
  - Compatibility code is modified not to rely on kernel version numbers
  - Use netlink callback dump args only
  - Add hash:net,port,net module to kernel (Oliver Smith)
  - Add net namespace for ipset (Vitaly Lavrov)
  - Use a common function at listing the extensions of the elements
  - For set:list types, replaced elements must be zeroed out
  - Fix hash resizing with comments
  - Support comments in the list-type ipset (Oliver Smith)
  - Support comments in bitmap-type ipsets (Oliver Smith)
  - Support comments in hash-type ipsets (Oliver Smith)
  - Support comments for ipset entries in the core (Oliver Smith)
  - Add hash:net,net module to kernel (Oliver Smith)
  - Fix serious failure in CIDR tracking (Oliver Smith)
  - list:set: make sure all elements are checked by the gc
  - Support extensions which need a per data destroy function
  - Generalize extensions support
  - Move extension data to set structure
  - Rename extension offset ids to extension ids
  - Prepare ipset to support multiple networks for hash types
  - Introduce new operation to get both setname and family
  - Validate the set family and not the set type family at swapping
    (Bug reported by Quentin Armitage, netfilter bugzilla id #843)
  - Consistent userspace testing with nomatch flag
  - Skip really non-first fragments for IPv6 when getting port/protocol
  - ipset standalone package needs to ship em_ipset.c (reported by Jan
    Engelhardt)

6.19
  - Compatibility fixes to keep the support of kernels back to 2.6.32
  - Backport nla_put_net64
  - Support package fragments for IPv4 protos without ports
    (Anders K. Pedersen)
  - Use fix sized type for timeout in the extension part
  - Make sure kernel configured properly for sparse checkings
  - Fix "may be used uninitialized" warnings (reported by Pablo Neira
    Ayuso)
  - Rename simple macro names to avoid namespace issues. (reported by
    David Laight)
  - Fix sparse warnings due to missing rcu annotations (reported by
    Pablo Neira Ayuso)
  - Sparse warning about shadowed variable fixed
  - Don't call ip_nest_end needlessly in the error path (suggested by
    Pablo Neira Ayuso)
  - set match: add support to match the counters
  - The list:set type with counter support
  - The hash types with counter support
  - The bitmap types with counter support
  - Introduce the counter extension in the core
  - list:set type using the extension interface
  - Hash types using the unified code base
  - Unified hash type generation
  - Bitmap types using the unified code base
  - Unified bitmap type generation
  - Introduce extensions to elements in the core
  - Move often used IPv6 address masking function to header file
  - Make possible to test elements marked with nomatch, from userspace
  - netfilter ipset: Use ipv6_addr_equal() where appropriate.
    (YOSHIFUJI Hideaki)
  - Add a compatibility header file for easier maintenance
  - The uapi include split in the package itself
  - Reorder modules a little bit in Kbuild

6.18
  - list:set: update reference counter when last element pushed off
  - hash:*net*: nomatch flag not excluded on set resize

6.17
  - Make sure ip_set_max isn't set to IPSET_INVALID_ID
  - netfilter: ipset: timeout values corrupted on set resize (Josh Hunt)
  - "Directory not empty" error message (reported by John Brendler)

6.16.1
 - Add ipset package version to external module description
 - Backport RCU handling up to 2.6.32.x

6.16
 - Netlink pid is renamed to portid in kernel 3.7.0
 - Fix RCU handling when the number of maximal sets are increased
 - netfilter: ipset: fix netiface set name overflow (Florian Westphal)

6.15
 - Increase the number of maximal sets automatically as needed
 - Restore the support of kernel versions between 2.6.32 and 2.6.35
 - Fix range bug in hash:ip,port,net
 - Revert, then reapply cidr book keeping patch to handle /0

6.14
 - Support to match elements marked with "nomatch" in hash:*net* sets
 - Coding style fixes
 - Include supported revisions in module description
 - Add /0 network support to hash:net,iface type
 - Fix cidr book keeping for hash:*net* types
 - Check and reject crazy /0 input parameters
 - Backport ether_addr_equal
 - Coding style fix, backport from kernel
 - net: cleanup unsigned to unsigned int (Eric Dumazet)

6.13
 - ipset: Handle properly an IPSET_CMD_NONE (Tomasz Bursztyka)
 - netfilter: ipset: hash:net,iface: fix interface comparison (Florian
   Westphal)
 - Timeout fixing bug broke SET target special timeout value, fixed
 - Use MSEC_PER_SEC instead of harcoded value

6.12
 - Backport nla_put_net* functions as NLA_PUT* were removed
 - netlink: add netlink_dump_control structure for netlink_dump_start()
 - ipset: Stop using NLA_PUT*().
 - Fix hash size checking in kernel (bug reported by Seblu)
 - Correct README file about minimal required iptables version
   (Oskar Berggren)
 - Sparse warnings "incorrect type in assignment" fixed
 - Fix timeout value overflow bug at large timeout parameters
   (bug reported by Andreas Herz)
 - ipv6: Add fragment reporting to ipv6_skip_exthdr().
 - net: remove ipv6_addr_copy()
 - Fix the inclusion of linux/export.h (Henry Culver)

6.11
 - hash:net,iface timeout bug fixed
 - Exceptions support added to hash:*net* types
 - net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules
 - Log warning when a hash type of set gets ful

6.10
 - Invert the logic to include version.h in ip_set_core.c
 - Suppress false compile-time warnings about uninitialized variable ip_to

6.9.1
 - Fix compiling ipset as external kernel modules

6.9
 - Complete Kconfig with hash:net,iface type (standalone package)
 - rtnetlink: Compute and store minimum ifinfo dump size (Greg Rose)
 - Remove redundant linux/version.h includes from net/ (Jesper Juhl)
 - ipset: use NFPROTO_ constants (Jan Engelhardt)
 - netfilter: ipset: expose userspace-relevant parts in ip_set.h
   (Jan Engelhardt)
 - netfilter: ipset: avoid use of kernel-only types (Jan Engelhardt)
 - netfilter: Remove unnecessary OOM logging messages (Joe Perches)
 - Dumping error triggered removing references twice and lead to kernel BUG
 - Autoload set type modules safely

6.8
 - Fix compiler warnings "'hash_ip4_data_next' declared inline after being
   called" (Chris Friesen)
 - hash:net,iface fixed to handle overlapping nets behind different
   interfaces
 - Make possible to hash some part of the data element only.

6.7
 - Whitespace and coding fixes, detected by checkpatch.pl
 - hash:net,iface type introduced
 - Use the stored first cidr value instead of '1'
 - Fix return code for destroy when sets are in use
 - Add xt_action_param to the variant level kadt functions, ipset API change
 - Drop supporting kernel versions below 2.6.35

6.6
 - Use unified from/to address masking and check the usage
 - ip_set_flush returned -EPROTO instead of -IPSET_ERR_PROTOCOL, fixed
 - Take into account cidr value for the from address when creating the set
 - Adding ranges to hash types with timeout could still fail, fixed
 - Removed old, not used hashing method ip_set_chash
 - Remove variable 'ret' in type_pf_tdel(), which is set but not used
 - Use proper timeout parameter to jiffies conversion

6.5
 - Support range for IPv4 at adding/deleting elements for hash:*net* types
 - Set type support with multiple revisions added
 - Fix adding ranges to hash types
 
6.4
 - Support listing setnames and headers too
 - Fix the order of listing of sets
 - Options and flags support added to the kernel API

6.3
 - ipset/Kconfig was a mixed up kernel config file, fixed (Michael Tokarev)
 - bitmap:ip,mac type requires "src" for MAC, enforce it
 - whitespace fixes: some space before tab slipped in
 - set match and SET target fixes (bugs reported by Lennert Buytenhek)

6.2
 - list:set timeout variant fixes
 - References are protected by rwlock instead of mutex
 - Add explicit text message to detect patched kernel (netlink.patch)
 - Timeout can be modified for already added elements

6.1
 - The hash:*port* types ignored the address range with non TCP/UDP, fixed
 - Fix checking the revision number of the set type at create command
 - SCTP, UDPLITE support to hash:*port* types added
 - Fix revision reporting got broken by the revision checking patch

6.0
 - Reorganized kernel/ subdir
 - netfilter: ipset: fix linking with CONFIG_IPV6=n (Patrick McHardy)
 - netfilter: ipset: send error message manually
 - netfilter: ipset: add missing break statemtns in 
   ip_set_get_ip_port() (Patrick McHardy)
 - netfilter: ipset: add missing include to xt_set.h (Patrick McHardy)
 - netfilter: ipset: remove unnecessary includes (Patrick McHardy)
 - netfilter: ipset: use nla_parse_nested() (Patrick McHardy)
 - Separate ipset errnos completely from system ones and bump protocol
   version
 - Use better error codes in xt_set.c
 - Fix sparse warning about shadowed definition
 - bitmap:ip type: flavour specific adt functions (Patrick McHardy's review)
 - bitmap:port type: flavour specific adt functions (Patrick McHardy's
   review)
 - Move the type specifici attribute validation to the core
   (suggested by Patrick McHardy)
 - Use vzalloc() instead of __vmalloc() (Eric Dumazet, Patrick McHardy)
 - Use meaningful error messages in xt_set.c (Patrick McHardy's review)
 - Constified attribute cannot be written (Patrick McHardy's review)
 - Send (N)ACK at dumping only when NLM_F_ACK is set
   (Patrick McHardy's review)
 - Correct the error codes: use ENOENT and EMSGSIZE (Patrick McHardy's
   review)

5.4
 - Fixed broken ICMP and ICMPv6 handling
 - Fix trailing whitespaces and pr_* messages
 - Un-inline functions which are not small enough (suggested by Patrick McHardy)
 - Fix module loading at create/header command (reported by Patrick McHardy)
 - Fix wrong kzalloc flag in type_pf_expire
 - The get_ip*_port functions are too large to be inlined, move into the core
 - Add missing __GFP_HIGHMEM flag to __vmalloc (suggested by Eric Dumazet)
 - Enforce network-order data in the netlink protocol
 - Use annotated types and fix sparse warnings (suggested by Patrick McHardy)
 - Move ip_set_alloc, ip_set_free and ip_set_get_ipaddr* into core
   (suggested by Patrick McHardy)
 - NETMASK*, HOSTMASK* macros are too generic, use small inline functions
   (suggested by Patrick McHardy)
 - Use static LIST_HEAD() for ip_set_type_list (suggested by Patrick McHardy)
 - Move NLA_PUT_NET* macros to include/net/netlink.h (suggested by Patrick
   McHardy)
 - The module parameter max_sets should be unsigned int (reported by Patrick
   McHardy)
 - Get rid of ip_set_kernel.h (suggested by Patrick McHardy)
 - Fix the placement style of boolean operators at continued lines
   (suggested by Patrick McHardy)

5.3
 - There is no need to call synchronize_net() at swapping
 - Replace strncpy with strlcpy at creating a set
 - Update copyright date and some style changes
 - Use jhash.h accepted in kernel, with backward compatibility
 - Separate prefixlens from ip_set core
 - Remove unused ctnl parameter from call_ad (Jan Engelhardt)
 - Comment the possible return values of the add/del/test type-functions

5.2
 - Kernel version check at minimal supported version was mistyped, now fixed.

5.1
 - Kernel version compatibility: support bumped starting from 2.6.34
   (Supporting older kernel releases would mean too much burden for me,
   sorry.)
 - kernel: use EXPORT_SYMBOL_GPL (Jan Engelhardt)
 - kernel: const annotations (Jan Engelhardt)
 - kernel: use __read_mostly for registration-type structures
   (Jan Engelhardt)
 - kernel: do not mix const and __read_mostly (Jan Engelhardt)
 - xt_set: avoid user types in exported kernel headers (Jan Engelhardt)
 - build: enable parallel building (Jan Engelhardt)
 - Fix Kbuild for me to delete backup files

5.0
 - New main branch - ipset completely rewritten

4.2
  - nethash and ipportnethash types counted every entry twice
    which could produce bogus entries when listing/saving these types
    of sets (bug reported by Husnu Demir)

4.1
  - Do not use init_MUTEX either (Jan Engelhardt)
  - Improve listing/saving hash type of sets by not copying empty
    entries unnecessarily to userspace.

4.0
  - Compilation of ip_set_iptree.c fails with kernel 2.6.20 due to
    missing include of linux/jiffies.h (Jan Engelhardt)
  - Do not use DECLARE_MUTEX (compatibility fix on 2.6.31-rt, Jan
    Engelhardt)
  - Flushing iptreemap type of sets caused high ksoftirqd load due to
    zeroed out gc parameter (bug reported by Georg Chini)
  - New protocol is introduced to handle aligment issues properly
    (bug reported by Georg Chini)
  - Binding support is removed

3.2
  - Mixed up formats in ip_set_iptree.c (Rob Sterenborg)
  - Don't use 'bool' for backward compatibility reasons (Rob Sterenborg)

3.1
  - Nonexistent sets were reported as existing sets when testing
    from userspace in setlist type of sets (bug reported by Victor A.
    Safronov)
  - When saving sets, setlist type of sets must come last in order
    to satisfy the dependency from the elements (bug reported by Marty B.)
  - Sparse insists that the flags argument to kmalloc() is gfp_t
    (Stephen Hemminger)
  - Correct format specifiers and change %i to %d (Jan Engelhardt)
  - Fix the definition of 'bool' for kernels <= 2.6.18 (Jan Engelhardt)

3.0
  - New kernel-userspace protocol release
  - Bigendian and 64/32bit fixes (Stefan Gula, bugzilla id 593)
  - Support of 2.4.3[67].*  kernels fixed
  - Compiling with debugging enabled fixed

2.5.0
  - Use the spinlock initiator instead of setting the locks directly
    as it causes compilation errors with 2.6.29-rt (Jan Engelhardt).
2.4.9
  - References to the old include file replaced with new one in order to
    really use the new Jenkins' hash function.

2.4.8
  - The Jenkins' hash lookup2() replaced with Jenkins' faster/better lookup3()
    hash function.
  - Bug fixed: after elements are added and deleted from a hash, an element
    can successfully be added in spite it's already in the hash and thus
    duplicates can occur (Shih-Yi Chen). 
  - Compatibility with old gcc without 'bool' added.

2.4.7
  - Typo which broke compilation with kernels < 2.6.28
    fixed (reported by Richard Lucassen, Danny Rawlins)

2.4.6
  - Compatibility fix for kernels >= 2.6.28

2.4.5
  - setlist type does not work properly together with swapping
    sets, bug reported by Thomas Jacob.
  - Include linux/capability.h explicitly in ip_set.c (Jan Engelhardt)

2.4.4
  - Premature checking prevents to add valid elements to hash
    types, fixed (bug reported by JC Janos).

2.4.2
  - When flushing a nethash/ipportnethash type of set, it can
    lead to a kernel crash due to a wrong type declaration,
    bug reported by Krzysztof Oledzki.
  - iptree and iptreemap types require the header file linux/timer.h,
    also reported by Krzysztof Oledzki.
  
2.4.1
  - Zero-valued element are not accepted by hash type of sets
    because we cannot make a difference between a zero-valued
    element and not-set element.
2.4
  - ipportiphash, ipportnethash and setlist types added
  - set type modules reworked to avoid code duplication
    as much as possible, code unification macros 
  - expand_macros Makefile target added to help debugging
    code unification macros
  - ip_set_addip_kernel and ip_set_delip_kernel
    changed from void to int, __ip_set_get_byname and
    __ip_set_put_byid added for the sake of setlist type
  - unnecessary includes removed
  - compatibility fix for kernels >= 2.6.27:
    semaphore.h was moved from asm/ to linux/ (James King)
  - ChangeLog forked for kernel part