DHCPServerImpl.cpp@ 71586

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1	/* $Id: DHCPServerImpl.cpp 69500 2017-10-28 15:14:05Z vboxsync $ */
2
3	/** @file
4	*
5	* VirtualBox COM class implementation
6	*/
7
8	/*
9	* Copyright (C) 2006-2017 Oracle Corporation
10	*
11	* This file is part of VirtualBox Open Source Edition (OSE), as
12	* available from http://www.virtualbox.org. This file is free software;
13	* you can redistribute it and/or modify it under the terms of the GNU
14	* General Public License (GPL) as published by the Free Software
15	* Foundation, in version 2 as it comes in the "COPYING" file of the
16	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
17	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
18	*/
19
20	#include <string>
21	#include "NetworkServiceRunner.h"
22	#include "DHCPServerImpl.h"
23	#include "AutoCaller.h"
24	#include "Logging.h"
25
26	#include <iprt/asm.h>
27	#include <iprt/net.h>
28	#include <iprt/cpp/utils.h>
29
30	#include <VBox/com/array.h>
31	#include <VBox/settings.h>
32
33	#include "VirtualBoxImpl.h"
34
35	// constructor / destructor
36	/////////////////////////////////////////////////////////////////////////////
37	const std::string DHCPServerRunner::kDsrKeyGateway = "--gateway";
38	const std::string DHCPServerRunner::kDsrKeyLowerIp = "--lower-ip";
39	const std::string DHCPServerRunner::kDsrKeyUpperIp = "--upper-ip";
40
41
42	struct DHCPServer::Data
43	{
44	Data()
45	: enabled(FALSE)
46	, router(false)
47	{}
48
49	Utf8Str IPAddress;
50	Utf8Str lowerIP;
51	Utf8Str upperIP;
52
53	BOOL enabled;
54	bool router;
55	DHCPServerRunner dhcp;
56
57	settings::DhcpOptionMap GlobalDhcpOptions;
58	settings::VmSlot2OptionsMap VmSlot2Options;
59	};
60
61
62	DHCPServer::DHCPServer()
63	: m(NULL)
64	, mVirtualBox(NULL)
65	{
66	m = new DHCPServer::Data();
67	}
68
69
70	DHCPServer::~DHCPServer()
71	{
72	if (m)
73	{
74	delete m;
75	m = NULL;
76	}
77	}
78
79
80	HRESULT DHCPServer::FinalConstruct()
81	{
82	return BaseFinalConstruct();
83	}
84
85
86	void DHCPServer::FinalRelease()
87	{
88	uninit ();
89
90	BaseFinalRelease();
91	}
92
93
94	void DHCPServer::uninit()
95	{
96	/* Enclose the state transition Ready->InUninit->NotReady */
97	AutoUninitSpan autoUninitSpan(this);
98	if (autoUninitSpan.uninitDone())
99	return;
100
101	unconst(mVirtualBox) = NULL;
102	}
103
104
105	HRESULT DHCPServer::init(VirtualBox *aVirtualBox, const Utf8Str &aName)
106	{
107	AssertReturn(!aName.isEmpty(), E_INVALIDARG);
108
109	AutoInitSpan autoInitSpan(this);
110	AssertReturn(autoInitSpan.isOk(), E_FAIL);
111
112	/* share VirtualBox weakly (parent remains NULL so far) */
113	unconst(mVirtualBox) = aVirtualBox;
114
115	unconst(mName) = aName;
116	m->IPAddress = "0.0.0.0";
117	m->GlobalDhcpOptions[DhcpOpt_SubnetMask] = settings::DhcpOptValue("0.0.0.0");
118	m->enabled = FALSE;
119
120	m->lowerIP = "0.0.0.0";
121	m->upperIP = "0.0.0.0";
122
123	/* Confirm a successful initialization */
124	autoInitSpan.setSucceeded();
125
126	return S_OK;
127	}
128
129
130	HRESULT DHCPServer::init(VirtualBox *aVirtualBox,
131	const settings::DHCPServer &data)
132	{
133	/* Enclose the state transition NotReady->InInit->Ready */
134	AutoInitSpan autoInitSpan(this);
135	AssertReturn(autoInitSpan.isOk(), E_FAIL);
136
137	/* share VirtualBox weakly (parent remains NULL so far) */
138	unconst(mVirtualBox) = aVirtualBox;
139
140	unconst(mName) = data.strNetworkName;
141	m->IPAddress = data.strIPAddress;
142	m->enabled = data.fEnabled;
143	m->lowerIP = data.strIPLower;
144	m->upperIP = data.strIPUpper;
145
146	m->GlobalDhcpOptions.clear();
147	m->GlobalDhcpOptions.insert(data.GlobalDhcpOptions.begin(),
148	data.GlobalDhcpOptions.end());
149
150	m->VmSlot2Options.clear();
151	m->VmSlot2Options.insert(data.VmSlot2OptionsM.begin(),
152	data.VmSlot2OptionsM.end());
153
154	autoInitSpan.setSucceeded();
155
156	return S_OK;
157	}
158
159
160	HRESULT DHCPServer::i_saveSettings(settings::DHCPServer &data)
161	{
162	AutoCaller autoCaller(this);
163	if (FAILED(autoCaller.rc())) return autoCaller.rc();
164
165	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
166
167	data.strNetworkName = mName;
168	data.strIPAddress = m->IPAddress;
169
170	data.fEnabled = !!m->enabled;
171	data.strIPLower = m->lowerIP;
172	data.strIPUpper = m->upperIP;
173
174	data.GlobalDhcpOptions.clear();
175	data.GlobalDhcpOptions.insert(m->GlobalDhcpOptions.begin(),
176	m->GlobalDhcpOptions.end());
177
178	data.VmSlot2OptionsM.clear();
179	data.VmSlot2OptionsM.insert(m->VmSlot2Options.begin(),
180	m->VmSlot2Options.end());
181
182	return S_OK;
183	}
184
185
186	HRESULT DHCPServer::getNetworkName(com::Utf8Str &aName)
187	{
188	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
189
190	aName = mName;
191	return S_OK;
192	}
193
194
195	HRESULT DHCPServer::getEnabled(BOOL *aEnabled)
196	{
197	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
198
199	*aEnabled = m->enabled;
200	return S_OK;
201	}
202
203
204	HRESULT DHCPServer::setEnabled(BOOL aEnabled)
205	{
206	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
207	m->enabled = aEnabled;
208
209	// save the global settings; for that we should hold only the VirtualBox lock
210	alock.release();
211	AutoWriteLock vboxLock(mVirtualBox COMMA_LOCKVAL_SRC_POS);
212	HRESULT rc = mVirtualBox->i_saveSettings();
213
214	return rc;
215	}
216
217
218	HRESULT DHCPServer::getIPAddress(com::Utf8Str &aIPAddress)
219	{
220	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
221
222	aIPAddress = Utf8Str(m->IPAddress);
223	return S_OK;
224	}
225
226
227	HRESULT DHCPServer::getNetworkMask(com::Utf8Str &aNetworkMask)
228	{
229	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
230
231	aNetworkMask = m->GlobalDhcpOptions[DhcpOpt_SubnetMask].text;
232	return S_OK;
233	}
234
235
236	HRESULT DHCPServer::getLowerIP(com::Utf8Str &aIPAddress)
237	{
238	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
239
240	aIPAddress = Utf8Str(m->lowerIP);
241	return S_OK;
242	}
243
244
245	HRESULT DHCPServer::getUpperIP(com::Utf8Str &aIPAddress)
246	{
247	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
248
249	aIPAddress = Utf8Str(m->upperIP);
250	return S_OK;
251	}
252
253
254	HRESULT DHCPServer::setConfiguration(const com::Utf8Str &aIPAddress,
255	const com::Utf8Str &aNetworkMask,
256	const com::Utf8Str &aLowerIP,
257	const com::Utf8Str &aUpperIP)
258	{
259	RTNETADDRIPV4 IPAddress, NetworkMask, LowerIP, UpperIP;
260	int rc;
261
262	rc = RTNetStrToIPv4Addr(aIPAddress.c_str(), &IPAddress);
263	if (RT_FAILURE(rc))
264	return mVirtualBox->setErrorBoth(E_INVALIDARG, rc,
265	"Invalid server address");
266
267	rc = RTNetStrToIPv4Addr(aNetworkMask.c_str(), &NetworkMask);
268	if (RT_FAILURE(rc))
269	return mVirtualBox->setErrorBoth(E_INVALIDARG, rc,
270	"Invalid netmask");
271
272	rc = RTNetStrToIPv4Addr(aLowerIP.c_str(), &LowerIP);
273	if (RT_FAILURE(rc))
274	return mVirtualBox->setErrorBoth(E_INVALIDARG, rc,
275	"Invalid range lower address");
276
277	rc = RTNetStrToIPv4Addr(aUpperIP.c_str(), &UpperIP);
278	if (RT_FAILURE(rc))
279	return mVirtualBox->setErrorBoth(E_INVALIDARG, rc,
280	"Invalid range upper address");
281
282	/*
283	* Insist on continuous mask. May be also accept prefix length
284	* here or address/prefix for aIPAddress?
285	*/
286	rc = RTNetMaskToPrefixIPv4(&NetworkMask, NULL);
287	if (RT_FAILURE(rc))
288	return mVirtualBox->setErrorBoth(E_INVALIDARG, rc,
289	"Invalid netmask");
290
291	/* It's more convenient to convert to host order once */
292	IPAddress.u = RT_N2H_U32(IPAddress.u);
293	NetworkMask.u = RT_N2H_U32(NetworkMask.u);
294	LowerIP.u = RT_N2H_U32(LowerIP.u);
295	UpperIP.u = RT_N2H_U32(UpperIP.u);
296
297	/*
298	* Addresses must be unicast and from the same network
299	*/
300	if ( (IPAddress.u & UINT32_C(0xe0000000)) == UINT32_C(0xe0000000)
301	\|\| (IPAddress.u & ~NetworkMask.u) == 0
302	\|\| ((IPAddress.u & ~NetworkMask.u) \| NetworkMask.u) == UINT32_C(0xffffffff))
303	{
304	return mVirtualBox->setError(E_INVALIDARG,
305	"Invalid server address");
306	}
307
308	if ( (LowerIP.u & UINT32_C(0xe0000000)) == UINT32_C(0xe0000000)
309	\|\| (LowerIP.u & NetworkMask.u) != (IPAddress.u &NetworkMask.u)
310	\|\| (LowerIP.u & ~NetworkMask.u) == 0
311	\|\| ((LowerIP.u & ~NetworkMask.u) \| NetworkMask.u) == UINT32_C(0xffffffff))
312	{
313	return mVirtualBox->setError(E_INVALIDARG,
314	"Invalid range lower address");
315	}
316
317	if ( (UpperIP.u & UINT32_C(0xe0000000)) == UINT32_C(0xe0000000)
318	\|\| (UpperIP.u & NetworkMask.u) != (IPAddress.u &NetworkMask.u)
319	\|\| (UpperIP.u & ~NetworkMask.u) == 0
320	\|\| ((UpperIP.u & ~NetworkMask.u) \| NetworkMask.u) == UINT32_C(0xffffffff))
321	{
322	return mVirtualBox->setError(E_INVALIDARG,
323	"Invalid range upper address");
324	}
325
326	/* The range should be valid ... */
327	if (LowerIP.u > UpperIP.u)
328	return mVirtualBox->setError(E_INVALIDARG,
329	"Invalid range bounds");
330
331	/* ... and shouldn't contain the server's address */
332	if (LowerIP.u <= IPAddress.u && IPAddress.u <= UpperIP.u)
333	return mVirtualBox->setError(E_INVALIDARG,
334	"Server address within range bounds");
335
336	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
337	m->IPAddress = aIPAddress;
338	m->GlobalDhcpOptions[DhcpOpt_SubnetMask] = aNetworkMask;
339
340	m->lowerIP = aLowerIP;
341	m->upperIP = aUpperIP;
342
343	// save the global settings; for that we should hold only the VirtualBox lock
344	alock.release();
345	AutoWriteLock vboxLock(mVirtualBox COMMA_LOCKVAL_SRC_POS);
346	return mVirtualBox->i_saveSettings();
347	}
348
349
350	HRESULT DHCPServer::encodeOption(com::Utf8Str &aEncoded,
351	uint32_t aOptCode,
352	const settings::DhcpOptValue &aOptValue)
353	{
354	switch (aOptValue.encoding)
355	{
356	case DhcpOptEncoding_Legacy:
357	{
358	/*
359	* This is original encoding which assumed that for each
360	* option we know its format and so we know how option
361	* "value" text is to be interpreted.
362	*
363	* "2:10800" # integer 32
364	* "6:1.2.3.4 8.8.8.8" # array of ip-address
365	*/
366	aEncoded = Utf8StrFmt("%d:%s", aOptCode, aOptValue.text.c_str());
367	break;
368	}
369
370	case DhcpOptEncoding_Hex:
371	{
372	/*
373	* This is a bypass for any option - preformatted value as
374	* hex string with no semantic involved in formatting the
375	* value for the DHCP reply.
376	*
377	* 234=68:65:6c:6c:6f:2c:20:77:6f:72:6c:64
378	*/
379	aEncoded = Utf8StrFmt("%d=%s", aOptCode, aOptValue.text.c_str());
380	break;
381	}
382
383	default:
384	{
385	/*
386	* Try to be forward compatible.
387	*
388	* "254@42=i hope you know what this means"
389	*/
390	aEncoded = Utf8StrFmt("%d@%d=%s", aOptCode, (int)aOptValue.encoding,
391	aOptValue.text.c_str());
392	break;
393	}
394	}
395
396	return S_OK;
397	}
398
399
400	int DHCPServer::addOption(settings::DhcpOptionMap &aMap,
401	DhcpOpt_T aOption, const com::Utf8Str &aValue)
402	{
403	settings::DhcpOptValue OptValue;
404
405	if (aOption != 0)
406	{
407	OptValue = settings::DhcpOptValue(aValue, DhcpOptEncoding_Legacy);
408	}
409	/*
410	* This is a kludge to sneak in option encoding information
411	* through existing API. We use option 0 and supply the real
412	* option/value in the same format that encodeOption() above
413	* produces for getter methods.
414	*/
415	else
416	{
417	uint8_t u8Code;
418	uint32_t u32Enc;
419	char *pszNext;
420	int rc;
421
422	rc = RTStrToUInt8Ex(aValue.c_str(), &pszNext, 10, &u8Code);
423	if (!RT_SUCCESS(rc))
424	return VERR_PARSE_ERROR;
425
426	switch (*pszNext)
427	{
428	case ':': /* support legacy format too */
429	{
430	u32Enc = DhcpOptEncoding_Legacy;
431	break;
432	}
433
434	case '=':
435	{
436	u32Enc = DhcpOptEncoding_Hex;
437	break;
438	}
439
440	case '@':
441	{
442	rc = RTStrToUInt32Ex(pszNext + 1, &pszNext, 10, &u32Enc);
443	if (!RT_SUCCESS(rc))
444	return VERR_PARSE_ERROR;
445	if (*pszNext != '=')
446	return VERR_PARSE_ERROR;
447	break;
448	}
449
450	default:
451	return VERR_PARSE_ERROR;
452	}
453
454	aOption = (DhcpOpt_T)u8Code;
455	OptValue = settings::DhcpOptValue(pszNext + 1, (DhcpOptEncoding_T)u32Enc);
456	}
457
458	aMap[aOption] = OptValue;
459	return VINF_SUCCESS;
460	}
461
462
463	HRESULT DHCPServer::addGlobalOption(DhcpOpt_T aOption, const com::Utf8Str &aValue)
464	{
465	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
466
467	int rc = addOption(m->GlobalDhcpOptions, aOption, aValue);
468	if (!RT_SUCCESS(rc))
469	return E_INVALIDARG;
470
471	/* Indirect way to understand that we're on NAT network */
472	if (aOption == DhcpOpt_Router)
473	{
474	m->dhcp.setOption(NetworkServiceRunner::kNsrKeyNeedMain, "on");
475	m->router = true;
476	}
477
478	alock.release();
479
480	AutoWriteLock vboxLock(mVirtualBox COMMA_LOCKVAL_SRC_POS);
481	return mVirtualBox->i_saveSettings();
482	}
483
484
485	HRESULT DHCPServer::getGlobalOptions(std::vector<com::Utf8Str> &aValues)
486	{
487	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
488	aValues.resize(m->GlobalDhcpOptions.size());
489	settings::DhcpOptionMap::const_iterator it;
490	size_t i = 0;
491	for (it = m->GlobalDhcpOptions.begin(); it != m->GlobalDhcpOptions.end(); ++it, ++i)
492	{
493	uint32_t OptCode = (*it).first;
494	const settings::DhcpOptValue &OptValue = (*it).second;
495
496	encodeOption(aValues[i], OptCode, OptValue);
497	}
498
499	return S_OK;
500	}
501
502	HRESULT DHCPServer::getVmConfigs(std::vector<com::Utf8Str> &aValues)
503	{
504	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
505	aValues.resize(m->VmSlot2Options.size());
506	settings::VmSlot2OptionsMap::const_iterator it;
507	size_t i = 0;
508	for (it = m->VmSlot2Options.begin(); it != m->VmSlot2Options.end(); ++it, ++i)
509	{
510	aValues[i] = Utf8StrFmt("[%s]:%d", it->first.VmName.c_str(), it->first.Slot);
511	}
512
513	return S_OK;
514	}
515
516
517	HRESULT DHCPServer::addVmSlotOption(const com::Utf8Str &aVmName,
518	LONG aSlot,
519	DhcpOpt_T aOption,
520	const com::Utf8Str &aValue)
521	{
522	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
523
524	settings::DhcpOptionMap &map = m->VmSlot2Options[settings::VmNameSlotKey(aVmName, aSlot)];
525	int rc = addOption(map, aOption, aValue);
526	if (!RT_SUCCESS(rc))
527	return E_INVALIDARG;
528
529	alock.release();
530
531	AutoWriteLock vboxLock(mVirtualBox COMMA_LOCKVAL_SRC_POS);
532	return mVirtualBox->i_saveSettings();
533	}
534
535
536	HRESULT DHCPServer::removeVmSlotOptions(const com::Utf8Str &aVmName, LONG aSlot)
537	{
538	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
539	settings::DhcpOptionMap &map = i_findOptMapByVmNameSlot(aVmName, aSlot);
540	map.clear();
541
542	alock.release();
543
544	AutoWriteLock vboxLock(mVirtualBox COMMA_LOCKVAL_SRC_POS);
545	return mVirtualBox->i_saveSettings();
546	}
547
548	/**
549	* this is mapping (vm, slot)
550	*/
551	HRESULT DHCPServer::getVmSlotOptions(const com::Utf8Str &aVmName,
552	LONG aSlot,
553	std::vector<com::Utf8Str> &aValues)
554	{
555
556	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
557	settings::DhcpOptionMap &map = i_findOptMapByVmNameSlot(aVmName, aSlot);
558	aValues.resize(map.size());
559	size_t i = 0;
560	settings::DhcpOptionMap::const_iterator it;
561	for (it = map.begin(); it != map.end(); ++it, ++i)
562	{
563	uint32_t OptCode = (*it).first;
564	const settings::DhcpOptValue &OptValue = (*it).second;
565
566	encodeOption(aValues[i], OptCode, OptValue);
567	}
568
569	return S_OK;
570	}
571
572
573	HRESULT DHCPServer::getMacOptions(const com::Utf8Str &aMAC, std::vector<com::Utf8Str> &aOption)
574	{
575	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
576	HRESULT hrc = S_OK;
577	ComPtr<IMachine> machine;
578	ComPtr<INetworkAdapter> nic;
579	settings::VmSlot2OptionsIterator it;
580	for(it = m->VmSlot2Options.begin(); it != m->VmSlot2Options.end(); ++it)
581	{
582	alock.release();
583	hrc = mVirtualBox->FindMachine(Bstr(it->first.VmName).raw(), machine.asOutParam());
584	alock.acquire();
585
586	if (FAILED(hrc))
587	continue;
588
589	alock.release();
590	hrc = machine->GetNetworkAdapter(it->first.Slot, nic.asOutParam());
591	alock.acquire();
592
593	if (FAILED(hrc))
594	continue;
595
596	com::Bstr mac;
597
598	alock.release();
599	hrc = nic->COMGETTER(MACAddress)(mac.asOutParam());
600	alock.acquire();
601
602	if (FAILED(hrc)) /* no MAC address ??? */
603	break;
604	if (!RTStrICmp(com::Utf8Str(mac).c_str(), aMAC.c_str()))
605	return getVmSlotOptions(it->first.VmName,
606	it->first.Slot,
607	aOption);
608	} /* end of for */
609
610	return hrc;
611	}
612
613	HRESULT DHCPServer::getEventSource(ComPtr<IEventSource> &aEventSource)
614	{
615	NOREF(aEventSource);
616	ReturnComNotImplemented();
617	}
618
619
620	HRESULT DHCPServer::start(const com::Utf8Str &aNetworkName,
621	const com::Utf8Str &aTrunkName,
622	const com::Utf8Str &aTrunkType)
623	{
624	/* Silently ignore attempts to run disabled servers. */
625	if (!m->enabled)
626	return S_OK;
627
628	/* Commmon Network Settings */
629	m->dhcp.setOption(NetworkServiceRunner::kNsrKeyNetwork, aNetworkName.c_str());
630
631	if (!aTrunkName.isEmpty())
632	m->dhcp.setOption(NetworkServiceRunner::kNsrTrunkName, aTrunkName.c_str());
633
634	m->dhcp.setOption(NetworkServiceRunner::kNsrKeyTrunkType, aTrunkType.c_str());
635
636	/* XXX: should this MAC default initialization moved to NetworkServiceRunner? */
637	char strMAC[32];
638	Guid guid;
639	guid.create();
640	RTStrPrintf (strMAC, sizeof(strMAC), "08:00:27:%02X:%02X:%02X",
641	guid.raw()->au8[0],
642	guid.raw()->au8[1],
643	guid.raw()->au8[2]);
644	m->dhcp.setOption(NetworkServiceRunner::kNsrMacAddress, strMAC);
645	m->dhcp.setOption(NetworkServiceRunner::kNsrIpAddress, Utf8Str(m->IPAddress).c_str());
646	m->dhcp.setOption(NetworkServiceRunner::kNsrIpNetmask, Utf8Str(m->GlobalDhcpOptions[DhcpOpt_SubnetMask].text).c_str());
647	m->dhcp.setOption(DHCPServerRunner::kDsrKeyLowerIp, Utf8Str(m->lowerIP).c_str());
648	m->dhcp.setOption(DHCPServerRunner::kDsrKeyUpperIp, Utf8Str(m->upperIP).c_str());
649
650	/* XXX: This parameters Dhcp Server will fetch via API */
651	return RT_FAILURE(m->dhcp.start(!m->router /* KillProcOnExit */)) ? E_FAIL : S_OK;
652	//m->dhcp.detachFromServer(); /* need to do this to avoid server shutdown on runner destruction */
653	}
654
655
656	HRESULT DHCPServer::stop (void)
657	{
658	return RT_FAILURE(m->dhcp.stop()) ? E_FAIL : S_OK;
659	}
660
661
662	settings::DhcpOptionMap &DHCPServer::i_findOptMapByVmNameSlot(const com::Utf8Str &aVmName,
663	LONG aSlot)
664	{
665	return m->VmSlot2Options[settings::VmNameSlotKey(aVmName, aSlot)];
666	}

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source: vbox/trunk/src/VBox/Main/src-server/DHCPServerImpl.cpp@ 71586

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