3.0.1之前更多的版本信息2

- Fix a bug that could cause the server to abort if compiled with

  POINTER_DEBUG enabled.

- Fix a bug that could cause the server to spin when responding to a

  DHCPREQUEST.

- Apply Joost Mulders' suggested patches for DLPI on x86.

- Support NUL characters in quoted strings.

- Install unformatted man pages on SunOS.

               Changes since 3.0 Beta 2 Patchlevel 18

- Allow the server to be placed in partner-down state using OMAPI.

  (Damien Neil)

- Implement omshell, which can be used to do arbitrary things to the

  server (in theory). (Damien Neil)

- Fix a case where if a client had two different leases the server could

  actually dereference the second one when it hadn't been referenced,

  leading to memory corruption and a core dump. (James Brister)

- Fix a case where a client could request the address of another client's

  lease, but find_lease wouldn't detect that the other client had it, and

  would attempt to allocate it to the client, resulting in a lease conflict

  message.

- Fix a case where a client with more than one client identifier could be

  given a lease where the hardware address was correct but the client

  identifier was not, resulting in a lease conflict message.

- Fix a problem where the server could write out a colon-separated

  hex list as a value for a variable, which would then not parse.

  The fix is to always write strings as quoted strings, with any

  non-printable characters quoted as octal escape sequences.   So

  a file written the old way still won't work, but new files written

  this way will work.

- Fix documentation for sending non-standard options.

- Use unparsable names for unknown options.    WARNING: this will

  break any configuration files that use the option-nnn convention.

  If you want to continue to use this convention for some options,

  please be sure to write a definition, like this:

  option option-nnn code nnn = string;

  You can use a descriptive name instead of option-nnn if you like.

- Fix a problem where we would see a DHCPDISCOVER/DHCPOFFER/

  DHCPREQUEST/DHCPACK/DHCPREQUEST/DHCPNAK sequence.   This was the

  result of a deceptively silly bug in supersede_lease.

- Fix client script exit status check, according to a fix supplied by

  Hermann Lauer.

- Fix an endianness bug in the tracefile support, regarding ICMP

  messages.

- Fix a bug in the client where the medium would not work correctly if

  it contained quoted strings.

                     ** there was no pl17 **

               Changes since 3.0 Beta 2 Patchlevel 16

- Add support for transaction tracing.   This allows the state of the

  DHCP server on startup, and all the subsequent transactions, to be

  recorded in a file which can then be played back to reproduce the

  behaviour of the DHCP server.   This can be used to quickly

  reproduce bugs that cause core dumps or corruption, and also for

  tracking down memory leaks.

- Incorporate some bug fixes provided by Joost Mulders for the DLPI

  package which should clear up problems people have been seeing on

  Solaris.

- Fix bugs in the handling of options stored as linked lists (agent

  options, fqdn options and nwip options) that could cause memory

  corruption and core dumps.

- Fix a bug in DHCPREQUEST handling that resulted in DHCPNAK messages

  not being send in some cases when they were needed.

- Make the lease structure somewhat more compact.

- Make initial failover startup *much* faster.   This was researched

  and implemented by Damien Neil.

- Add a --version flag to all executables, which prints the program

  name and version to standard output.

- Don't rewrite the lease file every thousand leases.

- A bug in nit.c for older SunOS machines was fixed by a patch sent in

  by Takeshi Hagiwara.

- Fix a memory corruption bug in the DHCP client.

- Lots of documentation updates.

- Add a feature allowing environment variables to be passed to the

  DHCP client script on the DHCP client command line.

- Fix client medium support, which had been broken for some time.

- Fix a bug in the DHCP client initial startup backoff interval, which

  would cause two DHCPDISCOVERS to be sent back-to-back on startup.

               Changes since 3.0 Beta 2 Patchlevel 15

- Some documentation tweaks.

- Maybe fix a problem in the DLPI code.

- Fix some error code space inconsistencies in ddns update code.

- Support relay agents that intercept unicast DHCP messages to stuff

  agent options into them.

- Fix a small memory leak in the relay agent option support code.

- Fix a core dump that would occur if a packet was sent with no

  options.

               Changes since 3.0 Beta 2 Patchlevel 14

- Finish fixing a long-standing bug in the agent options code.   This

  was causing core dumps and failing to operate correctly - in

  particular, agent option stashing wasn't working.   Agent option

  stashing should now be working, meaning that agent options can be

  used in class statements to control address allocation.

- Fix up documentation.

- Fix a couple of small memory leaks that would have added up

  significantly in a high-demand situation.

- Add a log-facility configuration parameter.

- Fix a compile error on some older operating systems.

- Add the ability in the client to execute certain statements before

  transmitting packets to the server.   Handy for debugging; not much

  practical use otherwise.

- Don't send faked-out giaddr when renewing or bound - again, useful

  for debugging.

               Changes since 3.0 Beta 2 Patchlevel 13

- Fixed a problem where the fqdn decoder would sometimes try to store

  an option with an (unsigned) negative length, resulting in a core

  dump on some systems.

- Work around the Win98 DHCP client, which NUL-terminates the FQDN

  option.

- Work around Win98 and Win2k clients that will claim they want to do

  the update even when they don't have any way to do it.

- Fix some log messages that can be printed when failover is operating

  that were not printing enough information.

- It was possible for a DHCPDISCOVER to get an allocation even when

  the state machine said the server shouldn't be responding.

- Don't load balance DHCPREQUESTs from clients in RENEWING and

  REBINDING, since in RENEWING, if we heard it, it's for us, and in

  REBINDING, the client wouldn't have got to REBINDING if its primary

  were answering.

- When we get a bogus state lease binding state transition, don't do

  the transition.

               Changes since 3.0 Beta 2 Patchlevel 12

- Fixed a couple of silly compile errors.

              Changes since 3.0 Beta 2 Patchlevel 11

- Albert Herranz tracked down and fixed a subtle bug in the base64

  decoder that would prevent any key with an 'x' in its base64

  representation from working correctly.

- Thanks to Chris Cheney and Michael Sanders, we have a fix for the

  hang that they both spotted in the DHCP server - when

  one-lease-per-client was set, the code to release the "other" lease

  could spin.

- Fix a problem with alignment of the input buffer in bpf in cases

  where two packets arrive in the same bpf read.

- Fix a problem where the relay agent would crash if you specified an

  interface name on the command line.

- Add the ability to conditionalize client behaviour based on the

  client state.

- Add support for the FQDN option, and added support for a new way of

  doing ddns updates (ddns update style interim) that allows more than

  one DHCP server to update the DNS for the same network(s).   This

  was implemented by Damien Neil with some additional functionality

  added by Ted Lemon.

- Damien added a "log" statement, so that the configuration file can

  be made to log debugging information and other information.

- Fixed a bug that caused option buffers not to be terminated with an

  end option.

- Fixed a long-standing bug in the support for option spaces where the

  options are stored as an ordered list rather than in a hash table,

  which could theoretically result in memory pool corruption.

- Prevent hardware declarations with no actual hardware address from

  being written as something unparsable, and behave correctly in the

  face of a null hardware address on input.

- Allow key names to be FQDNs, and qualify the algorithm name if it is

  specified unqualified.

- Modify the DDNS update code so that it never prints the "resolver

  failed" message, but instead says *why* the resolver failed.

- Officially support the subnet selection option, which now has an

  RFC.

- Fix a build bug on MacOS X.

- Allow administrator to disable ping checking.

- Clean up dhcpd.conf documentation and add more information about how

  it works.

              Changes since 3.0 Beta 2 Patchlevel 10

- Fix a bug introduced during debugging (!) and accidentally committed

  to CVS.

              Changes since 3.0 Beta 2 Patchlevel 9

- Fix DHCP client handling of vendor encapsulated options.

- Fix a bug in the handling of relay agent information options introduced

  in patchlevel 9.

- Stash agent options on client leases by default, and use the stashed

  options at renewal time.

- Add the ability to test the client's binding state in the client

  configuration language.

- Fix a core dump in the DNS update code.

- Fix some expression evaluation bugs that were causing updates to be

  done when no client hostname was received.

- Fix expression evaluation debugging printfs.

- Teach pretty_print_option to print options in option spaces other than

  the DHCP option space.

- Add a warning message if the RHS of a not is not boolean.

- Never select for more than a day, because some implementations of

  select will just fail if the timeout is too long (!).

- Fix a case where a DHCPDISCOVER from an unknown network would be

  silently dropped.

- Fix a bug where if a client requested an IP address for which a different

  client had the lease, the DHCP server would reallocate it anyway.

- Fix the DNS update code so that if the client changes its name, the DNS

  will be correctly updated.

              Changes since 3.0 Beta 2 Patchlevel 8

- Oops, there was another subtle math error in the header-length

  bounds-checking.

              Changes since 3.0 Beta 2 Patchlevel 7

- Oops, forgot to byte-swap udp header length before bounds-checking it.

              Changes since 3.0 Beta 2 Patchlevel 6

- Fix a possible DoS attack where a client could cause the checksummer

  to dump core.   This was a read, not a write, so it shouldn't be

  possible to exploit it any further than that.

- Implement client- and server-side support for using the Client FQDN

  option.

- Support for other option spaces in the client has been added.   This

  means that it is now possible to define a vendor option space on the

  client, request options in that space from the server (which must

  define the same option space), and then use those options in the

  client.   This also allows NWIP and Client FQDN options to be used

  meaningfully.

- Add object initializer support.   This means that objects can now be

  initialized to something other than all-zeros when allocated, which

  makes, e.g., the interface object support code a little more robust.

- Fix an off-by-one bug in the host stuffer.   This was causing host

  deletes not the work, and may also have been causing OMAPI

  connections to get dropped.   Thanks to James Brister for tracking

  this one down!

- Fixed a core dump in the interface discovery code that is triggered

  when there is no subnet declaration for an interface, but the server

  decides to continue running.   Thanks to Shane Kerr for tracking

  down and fixing this problem.

              Changes since 3.0 Beta 2 Patchlevel 5

- Fix a bug in the recent enhancement to the interface discovery code

  to support arbitrary-length interface lists.

- Support NUL-terminated DHCP options when initializing client-script

  environment.

- Fix suffix operator.

- Fix NetWare/IP option parsing.

- Better error/status checking in dhcpctl initialization and omapi

  connection code.

- Fix a potential memory smash in dhcpctl code.

- Fix SunOS4 and (maybe) Ultrix builds.

- Fix a bug where a certain sort of incoming packet could cause a core

  dump on Solaris (and probably elsewhere).

- Add some more safety checks in error logging code.

- Add support for ISC_R_INCOMPLETE in OMAPI protocol connection code.

- Fix relay agent so that if an interface is specified on the command

  line, the relay agent does not dump core.

- Fix class matching so that match if can be combined with match or

  spawn with.

- Do not allow spurious leases in the lease database to introduce

  potentially bogus leases into the in-memory database.

- Fix a byte-order problem in the client hardware address type code

  for OMAPI.

- Be slightly less picky about what sort of hardware addresses OMAPI

  can install in host declarations.

              Changes since 3.0 Beta 2 Patchlevel 4

- Incorporated Peter Marschall's proposed change to array/record

  parsing, which allows things like the slp-agent option to be encoded

  correctly.   Thanks very much to Peter for taking the initiative to

  do this, and for doing such a careful job of it (e.g., updating the

  comments)!

- Added an encoding for the slp-agent option.   :')

- Fixed SunOS 4 build.  Thanks to Robert Elz for responding to my

  request for help on this with patches!

- Incorporated a change that should fix a problem reported by Philippe

  Jumelle where when the network connection between two servers is

  lost, they never reconnect.

- Fix client script files other than that for NetBSD to actually use

  make_resolv_conf as documented in the manual page.

- Fix a bug in the packet handling code that could result in a core

  dump.

- Fix a bug in the bootp code where responses on the local net would

  be sent to the wrong MAC address.   Thanks to Jerry Schave for

  catching this one.

              Changes since 3.0 Beta 2 Patchlevel 3

- In the DHCP client, execute client statements prior to using the values

  of options, so that the client configuration can overried, e.g., the

  lease renewal time.

- Fix a reference counting error that would result in very reproducible

  failures in updates, as well as occasional core dumps, if a zone was

  declared without a key.

- Fix some Linux 2.0 compilation problems.

- Fix a bug in scope evaluation during execution of "on" statements that

  caused values not to be recorded on leases.

- If the dhcp-max-message-size option is specified in scope, and the

  client didn't send this option, use the one specified in scope to

  determine the maximum size of the response.

              Changes since 3.0 Beta 2 Patchlevel 2

- Fix a case where spawning subclasses were being allocated

  incorrectly, resulting in a core dump.

- Fix a case where the DHCP server might inappropriately NAK a

  RENEWING client.

- Fix a place dhcprequest() where static leases could leak.

- Include memory.h in omapip_p.h so that we don't get warnings about

  using memcmp().

              Changes since 3.0 Beta 2 Patchlevel 1

- Notice when SIOCFIGCONF returns more data than fit in the buffer -

  allocate a larger buffer, and retry.   Thanks to Greg Fausak for

  pointing this out.

- In the server, if no interfaces were configured, report an error and

  exit.

- Don't ever record a state of 'startup'.

- Don't try to evaluate the local failover binding address if none was

  specified.   Thanks to Joseph Breu for finding this.