Interface Eth1 not visible in Virtual Machine

Question

I am new to linux networking. Basically I wanted to use eth1 interface of my PC in VirtualBox but I simply don't find the eth1 interface. Below are the ifconfig and sudo ifconfig eth1 outputs. Please help me with valuable ideas.

Thanks.

o/p from Host :

sameer@sameer-Vostro-1015:~$ ifconfig
eth0  Link encap:Ethernet  HWaddr b8:ac:6f:6b:18:62  
      UP BROADCAST MULTICAST  MTU:1500  Metric:1
      RX packets:0 errors:0 dropped:0 overruns:0 frame:0
      TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:1000 
      RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

lo    Link encap:Local Loopback  
      inet addr:127.0.0.1  Mask:255.0.0.0
      inet6 addr: ::1/128 Scope:Host
      UP LOOPBACK RUNNING  MTU:65536  Metric:1
      RX packets:2338 errors:0 dropped:0 overruns:0 frame:0
      TX packets:2338 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:0 
      RX bytes:314892 (314.8 KB)  TX bytes:314892 (314.8 KB)

wlan0 Link encap:Ethernet  HWaddr 20:7c:8f:07:a6:58  
      inet6 addr: fe80::227c:8fff:fe07:a658/64 Scope:Link
      UP BROADCAST MULTICAST  MTU:1500  Metric:1
      RX packets:23408 errors:0 dropped:0 overruns:0 frame:0
      TX packets:17505 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:1000 
      RX bytes:15494141 (15.4 MB)  TX bytes:2203889 (2.2 MB) 


sameer@sameer-Vostro-1015:~$ sudo ifconfig eth1
eth1: error fetching interface information: Device not found

o/p from Virtual Box :

O/P from VirtualBox

Solution

I finally could create a Eth1 interface on my Virtual Box. I had to do two things:

1. Strangely the preference option is not visible on VirtualBox for ubuntu. So I had to press ctrl + G to get into it. Then I went to the network tab and created a hostonly adapter by clicking on a small button at top right corner among the three icons given.

2. Then I had to enable the interface by running the command

sudo ifconfig eth1 192.168.56.101 netmask 255.255.255.0 up

Then it was done :)

Eth1 interface

Comments

[Kamil Maciorowski]

1) Do you run this ifconfig in your host system? or in a guest system under VirtualBox? I guess it's the former. If so: 2) do you have at least two physical network ports in your PC?

[Dessa Simpson]

I'm going to assume that the output is from the VM. That eth0 is not the eth0 on your host - It's a virtual network adapter. Look in VBox's config.

[psusi]

If the VM only has one interface, then it will be known as eth0, regardless of what it is known as on the host system.

[sameer mohanty]

@KamilMaciorowski that was the O/P from my host. But even in the O/P from VirtualBox the Eth1 wasn't visible. I have edited my question with the image from VirtualBox. Kindly check

[sameer mohanty]

@VirtualDXS that was the O/P from my host

[sameer mohanty]

@KamilMaciorowski I have one ethernet port and one modem port.

[Dessa Simpson]

Are you sure your host even has an eth1?

[sameer mohanty]

@VirtualDXS Any way to know that considering most of the PCs have a eth1?

[Dessa Simpson]

Most PCs do NOT have an eth1. Most PCs only have eth0.

[Dessa Simpson]

Some PCs have a second network adapter, which will be eth1. How many physical ethernet ports do you have?

[sameer mohanty]

@VirtualDXS Okay i get it now. I just have 1 Eth port. But my virtualBox should have two ports right? One should be a NAT interface that it can use to access the Internet, and the other should be a host-only interface to enable it to communicate with the host machine

[Dessa Simpson]

The same interface is used for both.

[Dessa Simpson]

I've posted an answer.

[sameer mohanty]

I finally could create a Eth1. We need to configure it and give static Ip address to it. Below is the command : sudo ifconfig eth1 192.168.56.1 netmask 255.255.255.0 up