But now it says 'device eth0 has different mac address'. The ifcfg-eth0 file has the same HWADDR as that shown in MAC Address of network adapter property of the admin console of the VM. What I have tried so far: (1) delete ifcfg-eth0 file or comment out the line that says HWADDR=xxx (2) checked hwconf, but no entry for HWDAAR. Examples: iwconfig eth0 nwid AB34 iwconfig eth0 nwid off nickname Set the nickname, or the station name. Some 802.11 products do define it, but this is not used as far as the protocols (MAC, IP, TCP) are concerned and completely useless as far as configuration goes.

• Mac Eth0 Won't Allow Manual Software
• Mac Eth0 Won't Allow Manual Downloads

I'm following these instructions to create an Ad-Hoc WiFi network from a Pi Zero W. It works great. Problem is, once I'm done I want to switch the Pi back to DHCP and log on to my house WiFi like normal.

1) Replace the old files: /etc/dhcpcd.conf and /etc/network/interfaces to their original states from a backup before the Ad-Hoc instructions were followed

2) I'm trying to restart networking with:

.. and I've tried all these commands as well following that:

No matter what I try, I can't get the Pi to give up it's static IP and connect normally back to my home WiFi.. UNTIL I restart the computer. How else can I force the network to reload /etc/network/interfaces without powering cycling?

Here's the interfaces file BEFORE adhoc, which is restored AFTER adhoc:

during adhoc the wlan0 part is changed to:

..and that's the problem, I can't 'clear' that static IP address so the Pi won't connect to my router.

1 Answer

sudo service networking restart will DO NOTHING on a normal Raspbian, because it is not using networking it is using dhcpcd.

Try sudo systemctl start dhcpcd.service (or restart).

It is not clear what other services you may have started, so you should investigate and stop these.

MilliwaysMilliways

Not the answer you're looking for? Browse other questions tagged networkingwifidhcp or ask your own question.

How to manually configure eth0 in Ubuntu?I don't have any DHCP server. Do I need IP address when I am just going to capture packets?

Jorge Castro

migrated from serverfault.comMar 19 '11 at 9:02

This question came from our site for system and network administrators.

4 Answers

I am not sure what you exactly mean by your question. The real manual method has been described above, but since you write you don't have DHCP, I think you rather would like to know what to do to give your box a static IP address and assign this IP address at boot time automatically. Well, here is how:

There should be a file /etc/network/interfaces. This file is read by the Ubuntu boot scripts which in turn configure the network according to that file. If you would like to know what should / could go into that file, then please type 'man interfaces'.

For example, my /etc/network/interfaces looks like this (comments are cut out):

The first two lines are standard and may already look similar on your box. You may be interested especially in the rest of the file: These lines define a static network configuration to eth0 (without DHCP), and this static configuration gets active automatically on every boot.

BinarusBinarus

You may want to try this as well:

1. sudo -H gedit /etc/network/interfaces

2. Edit the eth0

3. Save and Exit

4. Run sudo /etc/init.d/networking restart.

Mac Eth0 Won't Allow Manual Software

You don't need IP address for capturing packets in promiscuous mode (when you want to capture all traffic, not just traffic destined to your computer). You can put that interface up using command

This do not assign IPv4 address to interface (IPv6 local-link address is automatically assigned, if you have IPv6 enabled).

OlliOlli

Mac Eth0 Won't Allow Manual Downloads

Pilot6