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Nat Network - no tcp connections; udp and icmp (ping) work alright

https://forums.virtualbox.org/viewtopic.php?t=105996

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Nat Network - no tcp connections; udp and icmp (ping) work alright

Posted: 7. May 2022, 18:54
by Trdp
It's a linux 32bit guest on a windows 10 pro 64bit host. The problem is that after the guest has booted up, it can load web pages, telnet to external hosts etc only for some time (like 4 hours) after which the guest fails to make any tcp connections although ping and udp work alright. Restarting the guest from within the guest does not resolve the issue, but turning it off and starting again from virtualbox resolve the issue for another almost similar amount of time. As one might expect, restarting the nat network using vboxmanage.exe utility similarly resolves the issue - clearly an issue with NAT network is indicated.

My dns is configured alright. In fact, I am trying to load the 1.1.1.3 page with its ip address and not hostname.

Edit 1:
I could finally have the VM down and grab some logs. As I cannot attach all of them due to size and other restrictions, I put them on my google drive and I am sharing the link to that: drive[.]google[.]com/file/d/1V-5YTHcfOcWfxR0DubRJAW4aehCwrITm/view?usp=sharing
As I cannot even share proper links, I am putting some relevant sections of some logs with their line numbers:
vBoxSVC.log

Code: Select all

1		00:00:00.005948 main     VirtualBox COM Server 6.1.32 r149290 win.amd64 (Jan 17 2022 11:29:30) release log
2		00:00:00.005952 main     Log opened 2022-05-07T10:36:54.726292900Z
3		00:00:00.005953 main     Build Type: release
4		00:00:00.005968 main     OS Product: Windows 10
5		00:00:00.005970 main     OS Release: 10.0.19042
6		00:00:00.005972 main     OS Service Pack: 
7		00:00:00.178954 main     DMI Product Name: Veriton Series
8		00:00:00.205144 main     DMI Product Version: P21-A0
9		00:00:00.205161 main     Firmware type: BIOS
10		00:00:00.205174 main     Host RAM: 3911MB (3.8GB) total, 916MB available
11		00:00:00.205180 main     Executable: c:\Program Files\Oracle\VirtualBox\VBoxSVC.exe
12		00:00:00.205181 main     Process ID: 12128
13		00:00:00.205182 main     Package type: WINDOWS_64BITS_GENERIC
14		00:00:00.407964          VirtualBox: object creation starts
15		00:00:00.408430          Home directory: 'C:\Users\pbo\.VirtualBox'
16		00:00:00.408966          Installed Drivers:
17		00:00:00.416968            C:\WINDOWS\system32\DRIVERS\VBoxNetLwf.sys (Version: 6.1.32.49290)
18		00:00:00.418292            C:\WINDOWS\system32\DRIVERS\VBoxUSBMon.sys (Version: 6.1.32.49290)
19		00:00:00.419326            C:\WINDOWS\system32\DRIVERS\VBoxSup.sys (Version: 6.1.32.49290)
20		00:00:00.423207          Loading settings file "C:\Users\pbo\.VirtualBox\VirtualBox.xml" with version "1.14-windows"
21		00:00:00.425222          usbLibGetDevices: Starting USB device enumeration
22		00:00:00.429583          Getting USB descriptor (id 3) failed (dwErr=31) on hub USB#ROOT_HUB30#4&b9eb813&0&0#{f18a0e88-c30c-11d0-8815-00a0c906bed8} port 1
23		00:00:00.438232          usbLibGetDevices: Found 3 USB devices, 0 captured
24		00:00:00.649069          netIfIsWireless: CreateFile on '\\.\{DF7C054E-5D75-44DC-916D-A13633DE0A68}' failed with rcWin=2 (0x2) - ignoring
25		00:00:00.653509          netIfIsWireless: CreateFile on '\\.\{082E955D-7BCA-41D5-B83D-6A5D021B6FB3}' failed with rcWin=2 (0x2) - ignoring
26		00:00:00.654045          netIfIsWireless: CreateFile on '\\.\{ECF35DF1-2CD0-46EB-968E-83033F0D4D1B}' failed with rcWin=2 (0x2) - ignoring
27		00:00:00.654572          netIfIsWireless: CreateFile on '\\.\{6D7830D8-CC8B-46C2-A7F2-5DD14AE6ACE7}' failed with rcWin=2 (0x2) - ignoring
28		00:00:00.663832          HostDnsMonitor: initializing
29		00:00:00.673862          HostDnsMonitor: updating information
30		00:00:00.673896          HostDnsMonitor: old information
31		00:00:00.673897            no server entries
32		00:00:00.673898            no domain set
33		00:00:00.673899            no search string entries
34		00:00:00.673899          HostDnsMonitor: new information
35		00:00:00.673900            server 1: 49.45.0.1
36		00:00:00.673900            server 2: 1.1.1.3
37		00:00:00.673901            server 3: 1.0.0.3
38		00:00:00.673901            no domain set
39		00:00:00.673902            no search string entries
40		00:00:00.837343          VD: VDInit finished with VINF_SUCCESS
41		00:00:00.874989          Loading settings file "C:\Users\pbo\VirtualBox VMs\tclinx\tclinx.vbox" with version "1.16-windows"
42		00:00:00.877394          Loading settings file "C:\Users\pbo\VirtualBox VMs\deb\deb.vbox" with version "1.16-windows"
43		00:00:00.879219          Loading settings file "C:\Users\pbo\VirtualBox VMs\win98se\win98se.vbox" with version "1.15-windows"
44		00:00:00.906758          OCI: Local config file 'C:\Users\pbo\.VirtualBox\oci_config' does not exist
45		00:00:00.906868          OCI: Original config file 'C:\Users\pbo\.oci\config' does not exist
46		00:00:00.906870          OCI: Reading profiles finished with status ERROR_SUCCESS
47		00:00:00.906878          ExtPack: Created cloud provider 'OCI' (hrc=ERROR_SUCCESS)
48		00:00:00.906911          VirtualBox: object created
49		00:00:00.955601          Launched VM: 62383328 pid: 14160 (0x3750) frontend: headless name: tclinx
50		00:00:04.732140          VM 'tclinx' starts using NAT network 'NatNetwork'
51		00:00:04.733208          HostDnsMonitorProxy::GetDomainName: no domain set
52		00:00:04.733268          ERROR [COM]: aRC=VBOX_E_OBJECT_NOT_FOUND (0x80bb0001) aIID={46735de7-f4c4-4020-a185-0d2881bcfa8b} aComponent={DHCPGlobalConfigWrap} aText={DHCP option 15 was not found}, preserve=false aResultDetail=0
53		00:00:04.733418          HostDnsMonitorProxy::GetNameServers:
54		00:00:04.733430            name server 1: 49.45.0.1
55		00:00:04.733436            name server 2: 1.1.1.3
56		00:00:04.733442            name server 3: 1.0.0.3
57		00:00:04.746625          Saving settings file "C:\Users\pbo\.VirtualBox\VirtualBox.xml" with version "1.14-windows"
58		00:00:04.828024          Saving settings file "C:\Users\pbo\.VirtualBox\VirtualBox.xml" with version "1.14-windows"
59		00:00:04.890437          NetworkServiceRunning: started 'VBoxNetDHCP.exe', pid 00003108
60		00:00:04.933704          NetworkServiceRunning: started 'VBoxNetNAT.exe', pid 000036a0
61		00:00:04.933818          Started NAT network 'NatNetwork'
62		00:00:05.451214          netIfIsWireless: CreateFile on '\\.\{DF7C054E-5D75-44DC-916D-A13633DE0A68}' failed with rcWin=2 (0x2) - ignoring
63		00:00:05.455151          netIfIsWireless: CreateFile on '\\.\{082E955D-7BCA-41D5-B83D-6A5D021B6FB3}' failed with rcWin=2 (0x2) - ignoring
64		00:00:05.455675          netIfIsWireless: CreateFile on '\\.\{ECF35DF1-2CD0-46EB-968E-83033F0D4D1B}' failed with rcWin=2 (0x2) - ignoring
65		00:00:05.456196          netIfIsWireless: CreateFile on '\\.\{6D7830D8-CC8B-46C2-A7F2-5DD14AE6ACE7}' failed with rcWin=2 (0x2) - ignoring
66		00:00:07.853658          HostDnsMonitorProxy::GetNameServers:
67		00:00:07.853674            name server 1: 49.45.0.1
68		00:00:07.853681            name server 2: 1.1.1.3
69		00:00:07.853687            name server 3: 1.0.0.3

270		09:54:40.276395          HostDnsMonitorProxy::GetNameServers:
271		09:54:40.276406            name server 1: 49.45.0.1
272		09:54:40.276412            name server 2: 1.1.1.3
273		09:54:40.276417            name server 3: 1.0.0.3
274		09:54:47.661718 dns-monitor HostDnsMonitor: updating information
275		09:54:47.661777 dns-monitor HostDnsMonitor: unchanged
276		10:30:21.832568 dns-monitor HostDnsMonitor: updating information
277		10:30:21.832759 dns-monitor HostDnsMonitor: unchanged
278		10:30:29.587659 dns-monitor HostDnsMonitor: updating information
279		10:30:29.587709 dns-monitor HostDnsMonitor: unchanged
280		12:46:51.616304 USBPROXY usbLibGetDevices: Starting USB device enumeration
281		12:46:51.642555 USBPROXY Getting USB descriptor (id 3) failed (dwErr=31) on hub USB#ROOT_HUB30#4&b9eb813&0&0#{f18a0e88-c30c-11d0-8815-00a0c906bed8} port 3
282		12:46:51.652822 USBPROXY usbLibGetDevices: Found 3 USB devices, 0 captured
283		12:46:56.782973 USBPROXY usbLibGetDevices: Starting USB device enumeration
284		12:46:56.791747 USBPROXY Getting USB descriptor (id 3) failed (dwErr=31) on hub USB#ROOT_HUB30#4&b9eb813&0&0#{f18a0e88-c30c-11d0-8815-00a0c906bed8} port 3
285		12:46:56.795984 USBPROXY usbLibGetDevices: Found 3 USB devices, 0 captured
286		14:19:35.518705 USBPROXY usbLibGetDevices: Starting USB device enumeration
287		14:19:35.526722 USBPROXY Getting USB descriptor (id 3) failed (dwErr=31) on hub USB#ROOT_HUB30#4&b9eb813&0&0#{f18a0e88-c30c-11d0-8815-00a0c906bed8} port 3
288		14:19:35.531022 USBPROXY usbLibGetDevices: Found 3 USB devices, 0 captured
289		14:19:42.504374 USBPROXY usbLibGetDevices: Starting USB device enumeration
290		14:19:42.512393 USBPROXY Getting USB descriptor (id 3) failed (dwErr=31) on hub USB#ROOT_HUB30#4&b9eb813&0&0#{f18a0e88-c30c-11d0-8815-00a0c906bed8} port 3
291		14:19:42.516345 USBPROXY usbLibGetDevices: Found 3 USB devices, 0 captured
292		14:19:43.822018 USBPROXY usbLibGetDevices: Starting USB device enumeration
293		14:19:43.830053 USBPROXY Getting USB descriptor (id 3) failed (dwErr=31) on hub USB#ROOT_HUB30#4&b9eb813&0&0#{f18a0e88-c30c-11d0-8815-00a0c906bed8} port 3
294		14:19:43.834275 USBPROXY usbLibGetDevices: Found 3 USB devices, 0 captured
295		14:19:51.721426 USBPROXY usbLibGetDevices: Starting USB device enumeration
296		14:19:51.729806 USBPROXY Getting USB descriptor (id 3) failed (dwErr=31) on hub USB#ROOT_HUB30#4&b9eb813&0&0#{f18a0e88-c30c-11d0-8815-00a0c906bed8} port 3
297		14:19:51.734129 USBPROXY usbLibGetDevices: Found 3 USB devices, 0 captured
298		14:19:57.613515 USBPROXY usbLibGetDevices: Starting USB device enumeration
299		14:19:57.619668 USBPROXY Getting USB descriptor (id 3) failed (dwErr=31) on hub USB#ROOT_HUB30#4&b9eb813&0&0#{f18a0e88-c30c-11d0-8815-00a0c906bed8} port 3
300		14:19:57.624853 USBPROXY usbLibGetDevices: Found 3 USB devices, 0 captured
301		14:20:00.361264 USBPROXY usbLibGetDevices: Starting USB device enumeration
302		14:20:00.368163 USBPROXY Getting USB descriptor (id 3) failed (dwErr=31) on hub USB#ROOT_HUB30#4&b9eb813&0&0#{f18a0e88-c30c-11d0-8815-00a0c906bed8} port 3
303		14:20:00.374971 USBPROXY usbLibGetDevices: Found 3 USB devices, 0 captured
304		14:20:54.254079 USBPROXY usbLibGetDevices: Starting USB device enumeration
305		14:20:54.258802 USBPROXY usbLibGetDevices: Found 2 USB devices, 0 captured
306		14:20:57.380754 dns-monitor HostDnsMonitor: updating information
307		14:20:57.380807 dns-monitor HostDnsMonitor: old information
308		14:20:57.380828 dns-monitor   server 1: 49.45.0.1
309		14:20:57.380836 dns-monitor   server 2: 1.1.1.3
310		14:20:57.380841 dns-monitor   server 3: 1.0.0.3
311		14:20:57.380846 dns-monitor   no domain set
312		14:20:57.380850 dns-monitor   no search string entries
313		14:20:57.380855 dns-monitor HostDnsMonitor: new information
314		14:20:57.380860 dns-monitor   server 1: 1.1.1.3
315		14:20:57.380865 dns-monitor   server 2: 1.0.0.3
316		14:20:57.380870 dns-monitor   no domain set
317		14:20:57.380874 dns-monitor   no search string entries
318		14:20:57.383308          HostDnsMonitorProxy::GetNameServers:
319		14:20:57.383342            name server 1: 1.1.1.3
320		14:20:57.383349            name server 2: 1.0.0.3
321		14:23:38.796663 USBPROXY usbLibGetDevices: Starting USB device enumeration
322		14:23:38.801993 USBPROXY usbLibGetDevices: Found 2 USB devices, 0 captured
323		14:23:40.147415 USBPROXY usbLibGetDevices: Starting USB device enumeration
324		14:23:40.152455 USBPROXY usbLibGetDevices: Found 2 USB devices, 0 captured
325		14:23:42.705478 USBPROXY usbLibGetDevices: Starting USB device enumeration
326		14:23:42.711401 USBPROXY usbLibGetDevices: Found 2 USB devices, 0 captured
327		14:24:38.540414 USBPROXY usbLibGetDevices: Starting USB device enumeration
328		14:24:38.545481 USBPROXY usbLibGetDevices: Found 2 USB devices, 0 captured
329		14:24:51.434878 USBPROXY usbLibGetDevices: Starting USB device enumeration
330		14:24:51.440776 USBPROXY usbLibGetDevices: Found 2 USB devices, 0 captured
331		14:24:54.010129 USBPROXY usbLibGetDevices: Starting USB device enumeration
332		14:24:54.015425 USBPROXY usbLibGetDevices: Found 2 USB devices, 0 captured
333		14:25:00.365141          Saving settings file "C:\Users\pbo\VirtualBox VMs\tclinx\tclinx.vbox" with version "1.16-windows"
334		14:25:00.498708 Watcher  VM 'tclinx' stops using NAT network 'NatNetwork'
335		14:25:00.533026 Watcher  NetworkServiceRunning: killing VBoxNetDHCP.exe, pid 000028c0...
336		14:25:00.765961 Watcher  NetworkServiceRunning: VBoxNetNAT.exe (pid 00001300) stopped: iStatus=0 enmReason=1
337		14:25:00.765988 Watcher  Stopped NAT network 'NatNetwork'
338		14:25:05.823110 main     VirtualBox: object deletion starts
339		14:25:05.824793 main     ERROR [COM]: aRC=VBOX_E_OBJECT_IN_USE (0x80bb000c) aIID={ad47ad09-787b-44ab-b343-a082a3f2dfb1} aComponent={MediumWrap} aText={Medium 'C:\Users\pbo\VirtualBox VMs\tclinx\tclinx.vdi' cannot be closed because it is still attached to 1 virtual machines}, preserve=false aResultDetail=0
340		14:25:05.872009 main     ERROR [COM]: aRC=VBOX_E_OBJECT_IN_USE (0x80bb000c) aIID={ad47ad09-787b-44ab-b343-a082a3f2dfb1} aComponent={MediumWrap} aText={Medium 'C:\Users\pbo\VirtualBox VMs\deb\deb.vdi' cannot be closed because it is still attached to 1 virtual machines}, preserve=false aResultDetail=0
341		14:25:05.874392 main     ERROR [COM]: aRC=VBOX_E_OBJECT_IN_USE (0x80bb000c) aIID={ad47ad09-787b-44ab-b343-a082a3f2dfb1} aComponent={MediumWrap} aText={Medium 'C:\Users\pbo\VirtualBox VMs\win98se\win98se.vdi' cannot be closed because it is still attached to 1 virtual machines}, preserve=false aResultDetail=0
342		14:25:05.882389 Watcher  ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={d0a0163f-e254-4e5b-a1f2-011cf991c38d} aComponent={VirtualBoxWrap} aText={The object is not ready}, preserve=false aResultDetail=0
343		14:25:05.935859 main     HostDnsMonitor: shutting down ...
344		14:25:05.936100 main     HostDnsMonitor: shut down
345		14:25:05.946009 main     VirtualBox: object deleted346

During the last moments of the VM life in this log, the NAT Network was not allowing any tcp connections although udp and ping were fine.
NatNetwork-dhcpd.log

Code: Select all

1	00:00:00.072644 VirtualBox DHCP Server 6.1.32 r149290 win.amd64 (Jan 17 2022 11:27:32) release log
2	00:00:00.072646 Log opened 2022-05-07T16:05:29.635538000Z
3	00:00:00.072647 Build Type: release
4	00:00:00.072652 OS Product: Windows 10
5	00:00:00.072653 OS Release: 10.0.19042
6	00:00:00.072653 OS Service Pack: 
7	00:00:00.437919 DMI Product Name: Veriton Series
8	00:00:00.453872 DMI Product Version: P21-A0
9	00:00:00.453882 Firmware type: BIOS
10	00:00:00.453893 Host RAM: 3911MB (3.8GB) total, 1157MB available
11	00:00:00.453898 Executable: c:\Program Files\Oracle\VirtualBox\VBoxNetDHCP.exe
12	00:00:00.453898 Process ID: 14492
13	00:00:00.453899 Package type: WINDOWS_64BITS_GENERIC
14	00:00:00.454033 --config:  NatNetwork
15	00:00:00.454060 --comment: NatNetwork
16	00:00:00.717407 IP address:   10.0.2.3/24
17	00:00:00.717422 Address pool: 10.0.2.4 - 10.0.2.254
18	00:00:00.717469 MAC address is not specified: will use generated MAC 08:00:27:06:9c:9a
19	00:00:00.717482 Db::i_enterFixedAddressAssignment: 08:00:27:06:9c:9a: 10.0.2.3
20	00:00:00.717494 loading leases from C:\Users\pbo\.VirtualBox\NatNetwork-Dhcpd.leases
21	00:00:00.717729 > LOAD: EXPIRED lease 10.0.2.4 to [01:08:00:27:b8:80:86] (08:00:27:b8:80:86), acked, valid from 2022-05-07T16:02:09Z for 600s until 2022-05-07T16:12:09Z
22	00:01:40.570602 REQUEST xid 0x07eec95f chaddr 08:00:27:b8:80:86
23	00:01:40.570724  ciaddr 10.0.2.4
24	00:01:40.570768  client id: 01 08 00 27 b8 80 86
25	00:01:40.570794  params { 1 3 6 12 15 28 42 }
26	00:01:40.570955   12: 'box'
27	00:01:40.570976   57: 02 40
28	00:01:40.570996   60: 'udhcp 1.31.1'
29	00:01:40.571034 > allocateAddress to client [01:08:00:27:b8:80:86] (08:00:27:b8:80:86)
30	00:01:40.571070 > ... found existing binding 10.0.2.4 to [01:08:00:27:b8:80:86] (08:00:27:b8:80:86), acked, valid from 2022-05-07T16:02:09Z for 600s until 2022-05-07T16:12:09Z
31	00:01:40.571113 Lease time 600 secs (default)
32	00:01:40.571137 writing leases to C:\Users\pbo\.VirtualBox\NatNetwork-Dhcpd.leases
33	00:01:40.611706 >>> requested option 1 (SubnetMask)
34	00:01:40.611745 ... always supplied
35	00:01:40.611764 >>> requested option 3 (Routers)
36	00:01:40.611788 ... found in GlobalConfig (type global)
37	00:01:40.611807 >>> requested option 6 (DNSes)
38	00:01:40.611825 ... found in GlobalConfig (type global)
39	00:01:40.611843 >>> requested option 12 (HostName)
40	00:01:40.611861 ... not found
41	00:01:40.611878 >>> requested option 15 (DomainName)
42	00:01:40.611896 ... not found
43	00:01:40.611912 >>> requested option 28 (BroadcastAddress)
44	00:01:40.611930 ... not found
45	00:01:40.611947 >>> requested option 42 (NTPServers)
46	00:01:40.611964 ... not found
47	00:01:40.612009 encoding option 1 (SubnetMask)
48	00:01:40.612029 encoding option 3 (Routers)
49	00:01:40.612047 encoding option 6 (DNSes)
50	00:01:40.612064 encoding option 51 (LeaseTime)
51	00:01:40.612086 ACK xid 0x07eec95f chaddr 08:00:27:b8:80:86
52	00:01:40.612141  ciaddr 10.0.2.4 yiaddr 10.0.2.4
53	00:01:40.612193 encoded message: 548 bytes7192	08:51:52.421019 REQUEST xid 0x6e8a38f2 chaddr 08:00:27:b8:80:86
7193	08:51:52.421443  ciaddr 10.0.2.4
7194	08:51:52.421472  client id: 01 08 00 27 b8 80 86
7195	08:51:52.421488  params { 1 3 6 12 15 28 42 }
7196	08:51:52.421581   12: 'box'
7197	08:51:52.421593   57: 02 40
7198	08:51:52.421605   60: 'udhcp 1.31.1'
7199	08:51:52.421623 > allocateAddress to client [01:08:00:27:b8:80:86] (08:00:27:b8:80:86)
7200	08:51:52.421643 > ... found existing binding 10.0.2.4 to [01:08:00:27:b8:80:86] (08:00:27:b8:80:86), acked, valid from 2022-05-08T00:52:21Z for 600s until 2022-05-08T01:02:21Z
7201	08:51:52.421668 Lease time 600 secs (default)
7202	08:51:52.421682 writing leases to C:\Users\pbo\.VirtualBox\NatNetwork-Dhcpd.leases
7203	08:51:52.462994 >>> requested option 1 (SubnetMask)
7204	08:51:52.463021 ... always supplied
7205	08:51:52.463033 >>> requested option 3 (Routers)
7206	08:51:52.463045 ... found in GlobalConfig (type global)
7207	08:51:52.463058 >>> requested option 6 (DNSes)
7208	08:51:52.463069 ... found in GlobalConfig (type global)
7209	08:51:52.463081 >>> requested option 12 (HostName)
7210	08:51:52.463093 ... not found
7211	08:51:52.463104 >>> requested option 15 (DomainName)
7212	08:51:52.463115 ... not found
7213	08:51:52.463125 >>> requested option 28 (BroadcastAddress)
7214	08:51:52.463142 ... not found
7215	08:51:52.463157 >>> requested option 42 (NTPServers)
7216	08:51:52.463168 ... not found
7217	08:51:52.463190 encoding option 1 (SubnetMask)
7218	08:51:52.463202 encoding option 3 (Routers)
7219	08:51:52.463214 encoding option 6 (DNSes)
7220	08:51:52.463226 encoding option 51 (LeaseTime)
7221	08:51:52.463241 ACK xid 0x6e8a38f2 chaddr 08:00:27:b8:80:86
7222	08:51:52.463276  ciaddr 10.0.2.4 yiaddr 10.0.2.4
7223	08:51:52.463310 encoded message: 548 bytes
7224	08:51:52.463314 0000000001a38280/0000: 02 01 06 00 f2 38 8a 6e-00 00 00 00 0a 00 02 04 .....8.n........
7225	08:51:52.463319 0000000001a38290/0010: 0a 00 02 04 00 00 00 00-00 00 00 00 08 00 27 b8 ..............'.
7226	08:51:52.463323 0000000001a382a0/0020: 80 86 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
7227	08:51:52.463326 0000000001a382b0/0030: 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
7228	08:51:52.463329 0000000001a382c0/0040: 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
7229	08:51:52.463332 0000000001a382d0/0050: 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
7230	08:51:52.463336 0000000001a382e0/0060: 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
7231	08:51:52.463339 0000000001a382f0/0070: 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
7232	08:51:52.463342 0000000001a38300/0080: 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
7233	08:51:52.463345 0000000001a38310/0090: 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
7234	08:51:52.463348 0000000001a38320/00a0: 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
7235	08:51:52.463351 0000000001a38330/00b0: 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
7236	08:51:52.463354 0000000001a38340/00c0: 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
7237	08:51:52.463358 0000000001a38350/00d0: 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
7238	08:51:52.463361 0000000001a38360/00e0: 00 00 00 00 00 00 00 00-00 00 00 00 63 82 53 63 ............c.Sc
7239	08:51:52.463364 0000000001a38370/00f0: 36 04 0a 00 02 03 35 01-05 01 04 ff ff ff 00 03 6.....5.........
7240	08:51:52.463367 0000000001a38380/0100: 04 0a 00 02 01 06 0c 31-2d 00 01 01 01 01 03 01 .......1-.......
7241	08:51:52.463371 0000000001a38390/0110: 00 00 03 33 04 00 00 02-58 ff 00 00 00 00 00 00 ...3....X.......
7242	08:51:52.463374 0000000001a383a0/0120: 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
7243	08:51:52.463378 0000000001a383b0/0130: 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
7244	08:51:52.463381 0000000001a383c0/0140: 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
7245	08:51:52.463384 0000000001a383d0/0150: 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
7246	08:51:52.463387 0000000001a383e0/0160: 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
7247	08:51:52.463390 0000000001a383f0/0170: 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
7248	08:51:52.463393 0000000001a38400/0180: 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
7249	08:51:52.463397 0000000001a38410/0190: 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
7250	08:51:52.463400 0000000001a38420/01a0: 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
7251	08:51:52.463403 0000000001a38430/01b0: 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
7252	08:51:52.463406 0000000001a38440/01c0: 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
7253	08:51:52.463410 0000000001a38450/01d0: 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
7254	08:51:52.463413 0000000001a38460/01e0: 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
7255	08:51:52.463416 0000000001a38470/01f0: 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
7256	08:51:52.463419 0000000001a38480/0200: 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
7257	08:51:52.463422 0000000001a38490/0210: 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
7258	08:51:52.463425 0000000001a384a0/0220: 00 00 00 00                                     ....

As before, the VM didn't have any outbound tcp capability during its end life.
dhcpd.leases

Code: Select all

<?xml version="1.0"?>
<Leases version="1.0">
  <Lease mac="08:00:27:b8:80:86" id="01080027b88086" network="0.0.0.0" state="acked">
    <Address value="10.0.2.4"/>
    <Time issued="1651971441" expiration="600"/>
  </Lease>
</Leases>
Edit 2:
As I research more into this issue, I find that there are actually 3 numbers of processes with identical names running. These are:

Code: Select all

    864      42    56436      35988     275.39   1876   0 VBoxHeadless
     81       4     2004       4808       0.28  12608   0 VBoxHeadless
     73       4     1112       7012       0.19  13368   0 VBoxHeadless
     67       4     1096       7016       0.16   7244   0 VBoxNetDHCP
     75       4     1960       4788       0.27  11820   0 VBoxNetDHCP
    306      14    11856      23260       1.61  12664   0 VBoxNetDHCP
     75       4     1960       4792       0.25   2200   0 VBoxNetNAT
    519      58    19952      29872       4.61  13996   0 VBoxNetNAT
     67       4     1136       7016       0.16  14032   0 VBoxNetNAT
    197      10     2112      10164       0.03  10988   0 VBoxSDS
   1229      16     6976      18688       0.47   7740   0 VBoxSVC
Interestingly, I have 3 total vms, 2 of which are not running.

Moreover, in the SVC.log, I can see the VBoxNetNat.exe and VBoxNetDHCP.exe terminating and restarting with different pids each time. I understand they might not be related to this issue, and although I am yet to establish a direct correlation with the proceses terminating and the issue beginning, I hight suspect this is indeed the case.

Re: Nat Network - no tcp connections; udp and icmp (ping) work alright

Posted: 9. May 2022, 18:53
by scottgus1
Trdp wrote:As I cannot attach all of them due to size and other restrictions,
Zipped logs fit, and the zips can be posted using the forum's Upload Attachment tab on the first day first post.
Trdp wrote:As I cannot even share proper links
This keep spammers from overloading us on their first posts. Since the Upload Attachment tab is available from the first day first post, no one needs to post links.

*******************************
I'm not entirely certain where to start troubleshooting this one, especially since ping and udp keep working, This would seem to indicate that the underlying NAT Network hardware is working, and the VM's OS has a glitch. Note that restarting the NAT Network system may simply be telling the OS to restart something, so I'm not yet certain if NAT Network is the source of the problem yet (especially since ping is still possible).

You could attach another VM to the same NAT network, install a typical Linux, like Ubuntu or Mint, and see if that VM's network stays up while the old VM's network has trouble. If the new VM remains properly connected, this would point to a problem in the old VM's OS instead of NAT Network or Virtualbox.

You cold also make a new NAT Network, make no changes to its setup, add a new VM to it, and see if it stays up or goes down when the old VM's network suffers.
Trdp wrote:I have 3 total vms, 2 of which are not running.
Does this mean you only have one VM running at a time? Or that the other two have died? Or that one VM remains connected while the other two have connection issues (and if so, is it always the same 2)?
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