mpack wrote:Your post doesn't make sense. The "only" in the "Host-Only" name means that this network mode is entirely virtual, there are no connections to any physical network. If there was then the DHCP servers would conflict.
mpack wrote:If you want a VM to participate in a host network then the proper modes are NAT or Bridged, depending on what level of participation the VM requires (bridged is for full participation e.g. as a server, NAT is for simpler requirements, e.g. Internet browsing).
Stradman wrote:Is there a tracing option to enable in VirtualBox to see what happens in the Host-Only interface in code?
VBoxManage modifyvm <uuid|vmname>
[--nictrace<1-N> on|off]
[--nictracefile<1-N> <filename>]
VBoxManage controlvm <uuid|vmname>
nictrace<1-N> on|off |
nictracefile<1-N> <filename>
fth0 wrote:@Stradman:
Can you also provide PCAP files from the guest and from the host, capturing all network interfaces on the host simultaneously?
fth0 wrote:PCAP files can be relatively large. Any hints for the OP how to provide them depending on their size?
fth0 wrote:@Stradman
We are thinking in the same direction. A Wireshark trace on the host capturing on all interfaces simultaneously, and a Wireshark trace on the guest at the same time would show if any packet is visible on an interface where it doesn't belong or isn't expected.
> ping 10.0.0.1
Pinging 10.0.0.1 with 32 bytes of data:
Reply from 10.0.0.1: bytes=32 time=19ms TTL=254
Reply from 10.0.0.1: bytes=32 time=18ms TTL=254
Reply from 10.0.0.1: bytes=32 time=18ms TTL=254
Reply from 10.0.0.1: bytes=32 time=24ms TTL=254
Ethernet adapter Ethernet:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) Ethernet Connection (5) I219-LM
Physical Address. . . . . . . . . : 8C-16-45-5A-BC-D4
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 192.168.119.12(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.224.0
Lease Obtained. . . . . . . . . . : maanantai 19. elokuuta 2019 9.35.23
Lease Expires . . . . . . . . . . : maanantai 19. elokuuta 2019 10.35.23
Default Gateway . . . . . . . . . : 192.168.100.1
Stradman wrote:So OBVIOUSLY it is a rogue "something" configured in the same physical subnet. Otherwise I see my 5 years of university in networking protocols a bit of good luck
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