1

Automatically acquire new IP address in new network

view story
linux-howto

http://unix.stackexchange.com – I'm running a Centos virtual machine on a laptop using a bridged network connection to avoid double-NAT issues, with the address assigned via DHCP. This works fine until I move the laptop to another network, at which point the VM doesn't notice that it's on a different network and continues to use the old IP address, resulting in a loss of connectivity. Currently I manage this by manually running ifdown and ifup to reset the network connection, but I'd prefer an automatic way to do this. Suggestions? Notes: All networks have DHCP servers. The VM correctly obtains an IP address lease on ea (HowTos)

Danial's picture
Submitted by Danial on 09/13/2012

Stories similar to Automatically acquire new IP address in new network

Hi have a Debian Squeeze box with eth0 and eth1.

In /etc/network/interfaces is:

auto eth1 iface eth1 inet static address 10.1.2.208 netmask 255.255.255.0 gateway 10.1.2.1

But every 24 hours, eth1 loses its statically-assigned IP address, and fetches one from DHCP instead!

I have been running a file server on Ubuntu for a couple of years now. Recently I had to take the network down. When I brought it back up, my server lost its ip address from the router.

I can't remember how to put it back in the dhcp mode. I know that running a server in the dhcp mode isn't optimal, but my router won't allow me to assign static ip addresses.

Hi all, i am find myself in need of building what amounts to 3 ip networks on 1 physical lan.

first LAN is another companies network on the 10.0.0.0 network a mix of pc's and equipment

second is LAN new company network 192.168.168.0/24

third network is an ip phone system for both i would like to use 192.168.200.0/24

i am hoping to use the same dhcp server to do this, assigning address to the o

In my home network, I have wireless router and DHCP server running on it. When I try to connect with my laptop to my home network, I get following IP address:

169.254.76.100 255.255.0.0

That is odd, because my DHCP address scope is starting from 192.168.1.100 to 192.168.1.199. When I restart my wireless network card, same problem.

When I run ipconfig in Command Prompt,I get following results.

I manage a reasonably small network (150 machines or so).

combined dhcp and static ip? 8 weeks 5 days ago

I know that there is an option for network-manager to get only the addres from DHCP but I think there's nothing for what you want.I'm not sure what you want to do. Do you have changing DNS servers and gateways?If you have control over the DHCP server you could do that by static DHCP (your pc gets the same address every time based on the MAC address).

XEN - (magic) networking issue 39 weeks 3 days ago

I have a very strange situation and do not know where to look. I have a XEN installed on Ubuntu 12.04 LTS. My hosting-provider does require, that every new IP my server uses has an own MAC-address.

This is a brand new installation using the new systemd base.Installed openbox as window manager and Network Manager.What did I miss that the hostname of this computer (opus) is not showing up in the DHCP Leases list?When I connect to the network using Network Manger(DHCP), hostname is not sent to the DHCP server (DNSmasq).

Hey everybody, im new here...

I was playing around with 12.04 server on an old laptop and had quite some fun with it. So i decided to put it on one of my servers.

I have just installed a Dell Poweredge 1850 with the latest 12.04 server release and cant get the network online.