Kea 2.5.8
simple_add_without_dhcid.cc
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1// Copyright (C) 2023 Internet Systems Consortium, Inc. ("ISC")
2//
3// This Source Code Form is subject to the terms of the Mozilla Public
4// License, v. 2.0. If a copy of the MPL was not distributed with this
5// file, You can obtain one at http://mozilla.org/MPL/2.0/.
6//
7#include <config.h>
8
10#include <d2srv/d2_cfg_mgr.h>
11#include <d2srv/d2_log.h>
12
13#include <util/buffer.h>
14#include <dns/rdataclass.h>
15
16#include <functional>
17
18namespace isc {
19namespace d2 {
20
21// SimpleAddWithoutDHCIDTransaction states
24
25// SimpleAddWithoutDHCIDTransaction events
28
32 DdnsDomainPtr& forward_domain,
33 DdnsDomainPtr& reverse_domain,
34 D2CfgMgrPtr& cfg_mgr)
35 : NameChangeTransaction(io_service, ncr, forward_domain, reverse_domain,
36 cfg_mgr) {
37 if (ncr->getChangeType() != isc::dhcp_ddns::CHG_ADD) {
39 "SimpleAddWithoutDHCIDTransaction, request type must be CHG_ADD");
40 }
41}
42
44}
45
46void
48 // Call superclass impl first.
50
51 // Define SimpleAddWithoutDHCIDTransaction events.
52 defineEvent(FQDN_IN_USE_EVT, "FQDN_IN_USE_EVT");
53 defineEvent(FQDN_NOT_IN_USE_EVT, "FQDN_NOT_IN_USE_EVT");
54}
55
56void
58 // Call superclass implementation first to verify its events. These are
59 // events common to all transactions, and they must be defined.
60 // SELECT_SERVER_EVT
61 // SERVER_SELECTED_EVT
62 // SERVER_IO_ERROR_EVT
63 // NO_MORE_SERVERS_EVT
64 // IO_COMPLETED_EVT
65 // UPDATE_OK_EVT
66 // UPDATE_FAILED_EVT
68
69 // Verify SimpleAddWithoutDHCIDTransaction events by attempting to fetch them.
72}
73
74void
76 // Call superclass impl first.
78
79 // Define SimpleAddWithoutDHCIDTransaction states.
80 defineState(READY_ST, "READY_ST",
82
83 defineState(SELECTING_FWD_SERVER_ST, "SELECTING_FWD_SERVER_ST",
85
86 defineState(SELECTING_REV_SERVER_ST, "SELECTING_REV_SERVER_ST",
88
89 defineState(REPLACING_FWD_ADDRS_ST, "REPLACING_FWD_ADDRS_ST",
91
92 defineState(REPLACING_REV_PTRS_ST, "REPLACING_REV_PTRS_ST",
94
95 defineState(PROCESS_TRANS_OK_ST, "PROCESS_TRANS_OK_ST",
97
98 defineState(PROCESS_TRANS_FAILED_ST, "PROCESS_TRANS_FAILED_ST",
100}
101
102void
104 // Call superclass implementation first to verify its states. These are
105 // states common to all transactions, and they must be defined.
106 // READY_ST
107 // SELECTING_FWD_SERVER_ST
108 // SELECTING_REV_SERVER_ST
109 // PROCESS_TRANS_OK_ST
110 // PROCESS_TRANS_FAILED_ST
112
113 // Verify SimpleAddWithoutDHCIDTransaction states by attempting to fetch them.
116}
117
118void
120 switch(getNextEvent()) {
121 case START_EVT:
122 if (getForwardDomain()) {
123 // Request includes a forward change, do that first.
125 } else {
126 // Reverse change only, transition accordingly.
128 }
129
130 break;
131 default:
132 // Event is invalid.
134 "Wrong event for context: " << getContextStr());
135 }
136}
137
138void
140 switch(getNextEvent()) {
142 // First time through for this transaction, so initialize server
143 // selection.
145 break;
147 // We failed to communicate with current server. Attempt to select
148 // another one below.
149 break;
150 default:
151 // Event is invalid.
153 "Wrong event for context: " << getContextStr());
154 }
155
156 // Select the next server from the list of forward servers.
157 if (selectNextServer()) {
158 // We have a server to try.
160 }
161 else {
162 // Server list is exhausted, so fail the transaction.
164 }
165}
166
167void
169 if (doOnEntry()) {
170 // Clear the update attempts count on initial transition.
172 }
173
174 switch(getNextEvent()) {
176 try {
179 } catch (const std::exception& ex) {
180 // While unlikely, the build might fail if we have invalid
181 // data. Should that be the case, we need to fail the
182 // transaction.
184 .arg(getRequestId())
185 .arg(getNcr()->toText())
186 .arg(ex.what());
188 break;
189 }
190
191 // Call sendUpdate() to initiate the async send. Note it also sets
192 // next event to NOP_EVT.
193 sendUpdate("Forward Add");
194 break;
195
196 case IO_COMPLETED_EVT: {
197 switch (getDnsUpdateStatus()) {
198 case DNSClient::SUCCESS: {
199 // We successfully received a response packet from the server.
200 const dns::Rcode& rcode = getDnsUpdateResponse()->getRcode();
201 if (rcode == dns::Rcode::NOERROR()) {
202 // We were able to add it. Mark it as done.
204
205 // If request calls for reverse update then do that next,
206 // otherwise we can process ok.
207 if (getReverseDomain()) {
209 } else {
211 }
212 } else {
213 // Any other value means cease. Really shouldn't happen.
215 .arg(getRequestId())
216 .arg(getCurrentServer()->toText())
217 .arg(getNcr()->getFqdn())
218 .arg(rcode.getCode());
220 }
221
222 break;
223 }
224
226 // No response from the server, log it and set up
227 // to select the next server for a retry.
229 .arg(getRequestId())
230 .arg(getNcr()->getFqdn())
231 .arg(getCurrentServer()->toText());
232
234 break;
235
236 case DNSClient::OTHER:
237 // We couldn't send to the current server, log it and set up
238 // to select the next server for a retry.
240 .arg(getRequestId())
241 .arg(getNcr()->getFqdn())
242 .arg(getCurrentServer()->toText());
243
245 break;
246
248 // A response was received but was corrupt. Retry it like an IO
249 // error.
251 .arg(getRequestId())
252 .arg(getCurrentServer()->toText())
253 .arg(getNcr()->getFqdn());
254
256 break;
257
258 default:
259 // Any other value and we will fail this transaction, something
260 // bigger is wrong.
262 .arg(getRequestId())
263 .arg(getDnsUpdateStatus())
264 .arg(getNcr()->getFqdn())
265 .arg(getCurrentServer()->toText());
266
268 break;
269 } // end switch on dns_status
270
271 break;
272 } // end case IO_COMPLETE_EVT
273
274 default:
275 // Event is invalid.
277 "Wrong event for context: " << getContextStr());
278 }
279}
280
281void
283 switch(getNextEvent()) {
285 // First time through for this transaction, so initialize server
286 // selection.
288 break;
290 // We failed to communicate with current server. Attempt to select
291 // another one below.
292 break;
293 default:
294 // Event is invalid.
296 "Wrong event for context: " << getContextStr());
297 }
298
299 // Select the next server from the list of forward servers.
300 if (selectNextServer()) {
301 // We have a server to try.
303 }
304 else {
305 // Server list is exhausted, so fail the transaction.
307 }
308}
309
310
311void
313 if (doOnEntry()) {
314 // Clear the update attempts count on initial transition.
316 }
317
318 switch(getNextEvent()) {
320 try {
323 } catch (const std::exception& ex) {
324 // While unlikely, the build might fail if we have invalid
325 // data. Should that be the case, we need to fail the
326 // transaction.
328 .arg(getRequestId())
329 .arg(getNcr()->toText())
330 .arg(ex.what());
332 break;
333 }
334
335 // Call sendUpdate() to initiate the async send. Note it also sets
336 // next event to NOP_EVT.
337 sendUpdate("Reverse Replace");
338 break;
339
340 case IO_COMPLETED_EVT: {
341 switch (getDnsUpdateStatus()) {
342 case DNSClient::SUCCESS: {
343 // We successfully received a response packet from the server.
344 const dns::Rcode& rcode = getDnsUpdateResponse()->getRcode();
345 if (rcode == dns::Rcode::NOERROR()) {
346 // We were able to update the reverse mapping. Mark it as done.
349 } else {
350 // Per RFC4703 any other value means cease.
351 // If we get not authorized should try the next server in
352 // the list? @todo This needs some discussion perhaps.
354 .arg(getRequestId())
355 .arg(getCurrentServer()->toText())
356 .arg(getNcr()->getFqdn())
357 .arg(rcode.getCode());
359 }
360
361 break;
362 }
363
365 // No response from the server, log it and set up
366 // to select the next server for a retry.
368 .arg(getRequestId())
369 .arg(getNcr()->getFqdn())
370 .arg(getCurrentServer()->toText());
371
372 // If we are out of retries on this server, we go back and start
373 // all over on a new server.
375 break;
376
377 case DNSClient::OTHER:
378 // We couldn't send to the current server, log it and set up
379 // to select the next server for a retry.
381 .arg(getRequestId())
382 .arg(getNcr()->getFqdn())
383 .arg(getCurrentServer()->toText());
384
385 // If we are out of retries on this server, we go back and start
386 // all over on a new server.
388 break;
389
391 // A response was received but was corrupt. Retry it like an IO
392 // error.
394 .arg(getRequestId())
395 .arg(getCurrentServer()->toText())
396 .arg(getNcr()->getFqdn());
397
398 // If we are out of retries on this server, we go back and start
399 // all over on a new server.
401 break;
402
403 default:
404 // Any other value and we will fail this transaction, something
405 // bigger is wrong.
408 .arg(getRequestId())
409 .arg(getDnsUpdateStatus())
410 .arg(getNcr()->getFqdn())
411 .arg(getCurrentServer()->toText());
412
414 break;
415 } // end switch on dns_status
416
417 break;
418 } // end case IO_COMPLETE_EVT
419
420 default:
421 // Event is invalid.
423 "Wrong event for context: " << getContextStr());
424 }
425}
426
427void
429 switch(getNextEvent()) {
430 case UPDATE_OK_EVT:
432 .arg(getRequestId())
433 .arg(getNcr()->toText());
435 endModel();
436 break;
437 default:
438 // Event is invalid.
440 "Wrong event for context: " << getContextStr());
441 }
442}
443
444void
446 switch(getNextEvent()) {
451 .arg(getRequestId())
453 endModel();
454 break;
455 default:
456 // Event is invalid.
458 "Wrong event for context: " << getContextStr());
459 }
460}
461
462void
464 // Construct an empty request.
466
467 // Construct dns::Name from NCR fqdn.
468 dns::Name fqdn(dns::Name(getNcr()->getFqdn()));
469
470 // There are no prerequisites.
471
472 // Build the Update Section. First we delete any pre-existing
473 // FQDN/IP RR. Then we add new one.
474
475 // Create the FQDN/IP 'delete' RR and add it to update section.
476 dns::RRsetPtr update(new dns::RRset(fqdn, dns::RRClass::ANY(),
478
479 request->addRRset(D2UpdateMessage::SECTION_UPDATE, update);
480
481 // Now make the new RRs.
482 // Create the TTL based on lease length.
483 dns::RRTTL lease_ttl(getNcr()->getLeaseLength());
484
485 // Create the FQDN/IP 'add' RR and add it to the to update section.
486 // Based on RFC 2136, section 2.5.1
487 update.reset(new dns::RRset(fqdn, dns::RRClass::IN(),
488 getAddressRRType(), lease_ttl));
489
490 addLeaseAddressRdata(update);
491 request->addRRset(D2UpdateMessage::SECTION_UPDATE, update);
492
493 // Set the transaction's update request to the new request.
494 setDnsUpdateRequest(request);
495}
496
497void
499 // Construct an empty request.
501
502 // Create the reverse IP address "FQDN".
503 std::string rev_addr = D2CfgMgr::reverseIpAddress(getNcr()->getIpAddress());
504 dns::Name rev_ip(rev_addr);
505
506 // Create the TTL based on lease length.
507 dns::RRTTL lease_ttl(getNcr()->getLeaseLength());
508
509 // There are no prerequisites.
510
511 // Create the FQDN/IP PTR 'delete' RR for this IP and add it to
512 // the update section.
513 dns::RRsetPtr update(new dns::RRset(rev_ip, dns::RRClass::ANY(),
515 request->addRRset(D2UpdateMessage::SECTION_UPDATE, update);
516
517 // Create the FQDN/IP PTR 'add' RR, add the FQDN as the PTR Rdata
518 // then add it to update section.
519 update.reset(new dns::RRset(rev_ip, dns::RRClass::IN(),
520 dns::RRType::PTR(), lease_ttl));
521 addPtrRdata(update);
522 request->addRRset(D2UpdateMessage::SECTION_UPDATE, update);
523
524 // Set the transaction's update request to the new request.
525 setDnsUpdateRequest(request);
526}
527
528} // namespace isc::d2
529} // namespace isc
static std::string reverseIpAddress(const std::string &address)
Generate a reverse order string for the given IP address.
Definition: d2_cfg_mgr.cc:169
@ TIMEOUT
No response, timeout.
Definition: dns_client.h:60
@ OTHER
Other, unclassified error.
Definition: dns_client.h:63
@ INVALID_RESPONSE
Response received but invalid.
Definition: dns_client.h:62
@ SUCCESS
Response received and is ok.
Definition: dns_client.h:59
Embodies the "life-cycle" required to carry out a DDNS update.
Definition: nc_trans.h:77
static const int SELECTING_FWD_SERVER_ST
State in which forward DNS server selection is done.
Definition: nc_trans.h:91
void retryTransition(const int fail_to_state)
Determines the state and next event based on update attempts.
Definition: nc_trans.cc:287
static const int PROCESS_TRANS_FAILED_ST
State which processes an unsuccessful transaction conclusion.
Definition: nc_trans.h:105
static const int READY_ST
State from which a transaction is started.
Definition: nc_trans.h:83
const D2UpdateMessagePtr & getDnsUpdateResponse() const
Fetches the most recent DNS update response packet.
Definition: nc_trans.cc:554
static const int PROCESS_TRANS_OK_ST
State which processes successful transaction conclusion.
Definition: nc_trans.h:102
static const int UPDATE_OK_EVT
Issued when the attempted update successfully completed.
Definition: nc_trans.h:135
virtual void verifyStates()
Validates the contents of the set of states.
Definition: nc_trans.cc:266
virtual D2UpdateMessagePtr prepNewRequest(DdnsDomainPtr domain)
Creates a new DNS update request based on the given domain.
Definition: nc_trans.cc:344
static const int UPDATE_FAILED_EVT
Issued when the attempted update fails to complete.
Definition: nc_trans.h:141
const dns::RRType & getAddressRRType() const
Returns the DHCP data type for the lease address.
Definition: nc_trans.cc:574
const dhcp_ddns::NameChangeRequestPtr & getNcr() const
Fetches the NameChangeRequest for this transaction.
Definition: nc_trans.cc:426
void initServerSelection(const DdnsDomainPtr &domain)
Initializes server selection from the given DDNS domain.
Definition: nc_trans.cc:456
static const int IO_COMPLETED_EVT
Issued when a DNS update packet exchange has completed.
Definition: nc_trans.h:130
static const int SELECT_SERVER_EVT
Issued when a server needs to be selected.
Definition: nc_trans.h:113
static const int SERVER_IO_ERROR_EVT
Issued when an update fails due to an IO error.
Definition: nc_trans.h:119
std::string getRequestId() const
Fetches the request id that identifies this transaction.
Definition: nc_trans.cc:436
virtual void defineStates()
Adds states defined by NameChangeTransaction to the state set.
Definition: nc_trans.cc:258
void addLeaseAddressRdata(dns::RRsetPtr &rrset)
Adds an RData for the lease address to the given RRset.
Definition: nc_trans.cc:367
virtual void sendUpdate(const std::string &comment="")
Send the update request to the current server.
Definition: nc_trans.cc:193
void setForwardChangeCompleted(const bool value)
Sets the forward change completion flag to the given value.
Definition: nc_trans.cc:329
void addPtrRdata(dns::RRsetPtr &rrset)
Adds an RData for the lease FQDN to the given RRset.
Definition: nc_trans.cc:409
bool selectNextServer()
Selects the next server in the current server list.
Definition: nc_trans.cc:468
void setNcrStatus(const dhcp_ddns::NameChangeStatus &status)
Sets the status of the transaction's NameChangeRequest.
Definition: nc_trans.cc:539
DdnsDomainPtr & getForwardDomain()
Fetches the forward DdnsDomain.
Definition: nc_trans.cc:446
virtual void verifyEvents()
Validates the contents of the set of events.
Definition: nc_trans.cc:243
void clearDnsUpdateRequest()
Destroys the current update request packet.
Definition: nc_trans.cc:304
void clearUpdateAttempts()
Resets the update attempts count.
Definition: nc_trans.cc:309
static const int SELECTING_REV_SERVER_ST
State in which reverse DNS server selection is done.
Definition: nc_trans.h:99
DNSClient::Status getDnsUpdateStatus() const
Fetches the most recent DNS update status.
Definition: nc_trans.cc:549
void setDnsUpdateRequest(D2UpdateMessagePtr &request)
Sets the update request packet to the given packet.
Definition: nc_trans.cc:299
static const int NO_MORE_SERVERS_EVT
Issued when there are no more servers from which to select.
Definition: nc_trans.h:125
virtual void defineEvents()
Adds events defined by NameChangeTransaction to the event set.
Definition: nc_trans.cc:228
void setReverseChangeCompleted(const bool value)
Sets the reverse change completion flag to the given value.
Definition: nc_trans.cc:334
const DnsServerInfoPtr & getCurrentServer() const
Fetches the currently selected server.
Definition: nc_trans.cc:534
static const int SERVER_SELECTED_EVT
Issued when a server has been selected.
Definition: nc_trans.h:116
DdnsDomainPtr & getReverseDomain()
Fetches the reverse DdnsDomain.
Definition: nc_trans.cc:451
std::string transactionOutcomeString() const
Returns a string version of transaction outcome.
Definition: nc_trans.cc:171
Thrown if the SimpleAddWithoutDHCIDTransaction encounters a general error.
void replacingRevPtrsHandler()
State handler for REPLACING_REV_PTRS_ST.
static const int FQDN_NOT_IN_USE_EVT
Event sent when replace attempt fails with address not in use.
virtual void defineStates()
Adds states defined by SimpleAddWithoutDHCID to the state set.
SimpleAddWithoutDHCIDTransaction(asiolink::IOServicePtr &io_service, dhcp_ddns::NameChangeRequestPtr &ncr, DdnsDomainPtr &forward_domain, DdnsDomainPtr &reverse_domain, D2CfgMgrPtr &cfg_mgr)
Constructor.
static const int REPLACING_REV_PTRS_ST
State that attempts to replace reverse PTR records.
virtual void defineEvents()
Adds events defined by SimpleAddWithoutDHCID to the event set.
static const int REPLACING_FWD_ADDRS_ST
State that attempts to add forward address records.
void readyHandler()
State handler for READY_ST.
void buildReplaceRevPtrsRequest()
Builds a DNS request to replace a reverse DNS entry for an FQDN.
void buildReplaceFwdAddressRequest()
Builds a DNS request to add/replace a forward DNS entry for an FQDN.
void selectingRevServerHandler()
State handler for SELECTING_REV_SERVER_ST.
static const int FQDN_IN_USE_EVT
Event sent when an add attempt fails with address in use.
virtual void verifyEvents()
Validates the contents of the set of events.
void selectingFwdServerHandler()
State handler for SELECTING_FWD_SERVER_ST.
virtual void verifyStates()
Validates the contents of the set of states.
void replacingFwdAddrsHandler()
State handler for REPLACING_FWD_ADDRS_ST.
void processAddFailedHandler()
State handler for PROCESS_TRANS_FAILED_ST.
void processAddOkHandler()
State handler for PROCESS_TRANS_OK_ST.
The Name class encapsulates DNS names.
Definition: name.h:219
static const RRClass & ANY()
Definition: rrclass.h:298
static const RRClass & IN()
Definition: rrclass.h:304
The RRTTL class encapsulates TTLs used in DNS resource records.
Definition: rrttl.h:51
static const RRType & PTR()
Definition: rrtype.h:303
The RRset class is a concrete derived class of BasicRRset which contains a pointer to an additional R...
Definition: rrset.h:844
DNS Response Codes (RCODEs) class.
Definition: rcode.h:40
static const Rcode & NOERROR()
A constant object for the NOERROR Rcode (see Rcode::NOERROR_CODE).
Definition: rcode.h:228
uint16_t getCode() const
Returns the Rcode code value.
Definition: rcode.h:106
const EventPtr & getEvent(unsigned int value)
Fetches the event referred to by value.
Definition: state_model.cc:186
void endModel()
Conducts a normal transition to the end of the model.
Definition: state_model.cc:271
void defineState(unsigned int value, const std::string &label, StateHandler handler, const StatePausing &state_pausing=STATE_PAUSE_NEVER)
Adds an state value and associated label to the set of states.
Definition: state_model.cc:196
unsigned int getNextEvent() const
Fetches the model's next event.
Definition: state_model.cc:373
void defineEvent(unsigned int value, const std::string &label)
Adds an event value and associated label to the set of events.
Definition: state_model.cc:170
void transition(unsigned int state, unsigned int event)
Sets up the model to transition into given state with a given event.
Definition: state_model.cc:264
bool doOnEntry()
Checks if on entry flag is true.
Definition: state_model.cc:339
static const int START_EVT
Event issued to start the model execution.
Definition: state_model.h:295
const StatePtr getStateInternal(unsigned int value)
Fetches the state referred to by value.
Definition: state_model.cc:219
std::string getContextStr() const
Convenience method which returns a string rendition of the current state and next event.
Definition: state_model.cc:443
#define isc_throw(type, stream)
A shortcut macro to insert known values into exception arguments.
#define LOG_ERROR(LOGGER, MESSAGE)
Macro to conveniently test error output and log it.
Definition: macros.h:32
#define LOG_INFO(LOGGER, MESSAGE)
Macro to conveniently test info output and log it.
Definition: macros.h:20
boost::shared_ptr< D2UpdateMessage > D2UpdateMessagePtr
Pointer to the DNS Update Message.
const isc::log::MessageID DHCP_DDNS_FORWARD_ADD_BUILD_FAILURE
Definition: d2_messages.h:24
boost::shared_ptr< DdnsDomain > DdnsDomainPtr
Defines a pointer for DdnsDomain instances.
Definition: d2_config.h:622
const isc::log::MessageID DHCP_DDNS_FORWARD_ADD_REJECTED
Definition: d2_messages.h:26
const isc::log::MessageID DHCP_DDNS_REVERSE_REPLACE_RESP_CORRUPT
Definition: d2_messages.h:83
boost::shared_ptr< D2CfgMgr > D2CfgMgrPtr
Defines a shared pointer to D2CfgMgr.
Definition: d2_cfg_mgr.h:334
const isc::log::MessageID DHCP_DDNS_ADD_SUCCEEDED
Definition: d2_messages.h:12
const isc::log::MessageID DHCP_DDNS_FORWARD_ADD_IO_ERROR
Definition: d2_messages.h:25
const isc::log::MessageID DHCP_DDNS_REVERSE_REPLACE_TIMEOUT
Definition: d2_messages.h:84
const isc::log::MessageID DHCP_DDNS_ADD_FAILED
Definition: d2_messages.h:11
isc::log::Logger d2_to_dns_logger("d2-to-dns")
Definition: d2_log.h:20
const isc::log::MessageID DHCP_DDNS_FORWARD_ADD_TIMEOUT
Definition: d2_messages.h:28
const isc::log::MessageID DHCP_DDNS_REVERSE_REPLACE_REJECTED
Definition: d2_messages.h:82
const isc::log::MessageID DHCP_DDNS_REVERSE_REPLACE_BUILD_FAILURE
Definition: d2_messages.h:80
const isc::log::MessageID DHCP_DDNS_FORWARD_ADD_BAD_DNSCLIENT_STATUS
Definition: d2_messages.h:23
const isc::log::MessageID DHCP_DDNS_REVERSE_REPLACE_BAD_DNSCLIENT_STATUS
Definition: d2_messages.h:79
const isc::log::MessageID DHCP_DDNS_REVERSE_REPLACE_IO_ERROR
Definition: d2_messages.h:81
const isc::log::MessageID DHCP_DDNS_FORWARD_ADD_RESP_CORRUPT
Definition: d2_messages.h:27
boost::shared_ptr< NameChangeRequest > NameChangeRequestPtr
Defines a pointer to a NameChangeRequest.
Definition: ncr_msg.h:241
boost::shared_ptr< AbstractRRset > RRsetPtr
A pointer-like type pointing to an RRset object.
Definition: rrset.h:50
Defines the logger used by the top-level component of kea-lfc.
This file defines the class SimpleAddWithoutDHCIDTransaction.