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Nat network give same IP to hosts
Posted: 17. Jan 2020, 13:19
by soysau
I have 3 Ubuntu machines, all linked-cloned from first one. And I have a Nat Network with DHCP enabled. When I was on Virtualbox 5.x they were okey, but today I upgraded to 6.1 and the same hosts they all get the same IP 10.0.2.4/24. All MAC address are different.
They can barely ping to 1.1.1.1. They also resolve DNS. But they have all the same IP. I have some friends who have the same problem after upgrading.
Re: Nat network give same IP to hosts
Posted: 17. Jan 2020, 15:31
by scottgus1
Please post the command outputs of these commands, as text in
Code: Select all
tags:
[pre][color=#800080]vboxmanage list natnets
vboxmanage list dhcpservers[/color][/pre]
Also put all three guests' .vbox files in a zip folder and post the zip using the forum's Upload Attachment tab.
Re: Nat network give same IP to hosts
Posted: 20. Jan 2020, 11:34
by soysau
scottgus1 wrote:Please post the command outputs of these commands, as text in code tags:
vboxmanage list natnets
vboxmanage list dhcpservers
Also put all three guests' .vbox files in a zip folder and post the zip using the forum's Upload Attachment tab.
Here are the output from vboxmanage list natnets
Code: Select all
NetworkName: RedNat
IP: 10.0.2.1
Network: 10.0.2.0/24
IPv6 Enabled: No
IPv6 Prefix: fd17:625c:f037:2::/64
DHCP Enabled: Yes
Enabled: Yes
Port-forwarding (ipv4)
ssh1:tcp:[127.0.0.1]:2200:[10.0.2.100]:22
ssh2:tcp:[127.0.0.1]:2201:[10.0.2.200]:22
loopback mappings (ipv4)
127.0.0.1=2
This one from vboxmanage list dhcpservers
Code: Select all
NetworkName: HostInterfaceNetworking-vboxnet0
Dhcpd IP: 192.168.56.100
LowerIPAddress: 192.168.56.101
UpperIPAddress: 192.168.56.254
NetworkMask: 255.255.255.0
Enabled: Yes
Global Configuration:
minLeaseTime: default
defaultLeaseTime: default
maxLeaseTime: default
Forced options: None
Suppressed opts.: None
1/legacy: 255.255.255.0
Groups: None
Individual Configs: None
NetworkName: NatNetwork
Dhcpd IP: 10.0.2.3
LowerIPAddress: 10.0.2.4
UpperIPAddress: 10.0.2.254
NetworkMask: 255.255.255.0
Enabled: Yes
Global Configuration:
minLeaseTime: default
defaultLeaseTime: default
maxLeaseTime: default
Forced options: None
Suppressed opts.: None
1/legacy: 255.255.255.0
3/legacy: 10.0.2.1
6/legacy: 10.0.2.1
Groups: None
Individual Configs: None
NetworkName: RedNat
Dhcpd IP: 10.0.2.3
LowerIPAddress: 10.0.2.4
UpperIPAddress: 10.0.2.254
NetworkMask: 255.255.255.0
Enabled: Yes
Global Configuration:
minLeaseTime: default
defaultLeaseTime: default
maxLeaseTime: default
Forced options: None
Suppressed opts.: None
1/legacy: 255.255.255.0
3/legacy: 10.0.2.1
6/legacy: 10.0.2.1
Groups: None
Individual Configs: None
I also saw that this happens only in machines that are cloned from original one. So, this 3 machines are cloned from one. Link-clone.
This didn't happen in 5.x Virtualbox version.
Thanks for the reply!