Tagged Questions

0
votes
0answers
21 views

Using dhclient to set hostname with DHCP server

On a Fedora 15 VM, we use the following command to set the host name with the DHCP server: dhclient p2p1 -H <host>; This works great until the lease expires and then the host name doesn't ...
1
vote
1answer
47 views

How to override the network DHCP Server settings to be specific to my own .conf file?

Basically, I have want to test out WPAD(Web Proxy Autodiscovery Protocol ) , PAC. But I would like to do it without touching the Network DHCP server. So, can you suggest a way in which I can achieve ...
1
vote
2answers
113 views

DHCP issue in our network, could it be hidden 2nd DHCP server?

Something weird happened today. We have a TP-LINK wifi router in our office distributing a pool of IPs 192.168.80-200. There are some windows and some linux boxes. One of the linux boxes (CentOS) ...
0
votes
1answer
129 views

How do I force dhclient to use last known IP?

This is for fault tolerance in a client/server app. The business says that when the network is unavailable, the app must still run. And it will, provided it doesn't lose it's IP address. The problem ...
2
votes
1answer
398 views

Mac OSX server command equivalent for dhclient?

Is there an MacOS command that makes a dhcp request, and renews the old lease, drops it for a new one, or usefully reports errors or lack of response from a dhcp server? This would both help fix ...
1
vote
2answers
163 views

dhclient requests filling memory?

Dammit Jim, I'm a web developer, not a sys admin. With that out of the way, my client's has a CentOS server (6.2) that is only serving a single Magento site (and the associated MySQL server) and it ...
3
votes
3answers
4k views

Why is dhclient issuing a unicast DHCPREQUEST every ~15 seconds instead of at T1/T2 timers?

I am running a CentOS 6.2 server as my gateway and firewall, while also providing some internal services. This is a setup I have had for years using various hardware and distributions (redhat based). ...
-4
votes
1answer
104 views

DHCP IPV6 Environment [duplicate]

Possible Duplicate: DHCP IPV6 Environment in DHCPV4 for discover, request we mention the source ip as 0.0.0.0,what it could be the in DHCPv6.Similarly we mention the multicast address as ...
3
votes
1answer
329 views

Request multiple IP-addresses via DHCP on a single physical interface (OpenBSD)

On OpenBSD, is it possible to request multiple IP-addresses via DHCP on a single physical interface? It looks like DHCP leased addresses can't be assigned as aliases. I though of creating a virtual ...
0
votes
1answer
157 views

How to enable DHCP address release with dhclient

We have a subnet with a couple of hundred virtual machines that: boot up do some short heavy computational task and shut down. The average life of a vm here is about 20 minutes. It's critical ...
6
votes
1answer
1k views

How to request dhcp (using dhclient) on a virtual interface (i.e. eth0:1)

This seems to work fine: dhclient eth0 ifconfig eth0:1 192.168.1.105 up But not this: ifconfig eth0 192.168.1.105 up dhclient eth0:1 Is there any way to get dhcp on a virtual address?
6
votes
3answers
9k views

How to configure radvd, dhcpd6, routing and /64 subnet based on delegated prefix by DHCPv6-PD server?

My ISP has just started IPv4/IPv6 dual stack service. In order to connect IPv4/IPv6 internet, almost all users usually use a CPE leased by the ISP. But I want to use my Linux router instead of such ...
5
votes
2answers
2k views

Register A records for my Linux box on my Windows 2008 DNS/DHCP server

I've a network which is mainly Windows: Windows 2008 server (with DNS/DHCP as well as AD), and various mainly Windows machines (servers, XP, 7). I know trying to add few Linux boxes, and can't make ...
1
vote
3answers
1k views

resolv.conf after reboot on CentOS 5.5 EC2 instance

I'm having trouble getting my CentOS 5.5 EC2 instances (both i386 and x86_64) to properly populate resolv.conf after booting. No matter what I do, I end up with the default EC2 resolv.conf: ; ...
0
votes
2answers
321 views

dhclient append settings from multiple DHCP servers

I have a server with two interfaces connected to two separate networks, using DHCP for both. When dhclient is writing /etc/resolv.conf, I would like it to append settings that aren't already there. ...
2
votes
2answers
768 views

Linux:/sbin/dhclient to bind to a specific interface?

I'm running RHEL5.5 and have several network interfaces (eth0, eth1, eth2) on the machine. I wish to make /sbin/dhclient bind its UDP port 68 on specific interfaces (eth0 and eth2) but when I do ...
1
vote
2answers
3k views

VMWare Workstation w/Ubuntu 10.04 Server: DHCP Issues

Hey all. Bit of a possibly simple DHCP issue with my Ubuntu 10.04 Server (VMWare Guest). When I sudo dhclient eth0 it sends out plenty of DHCPDISCOVERs but doesn't get any DHCPOFFERs back from the ...
1
vote
3answers
1k views

DHCLIENT.CONF System variables

I've just a little question. My DNS Servers are updated by our DHCP Server (Microsoft Windows 2003 R2 SP2). My clients are Debian Linux Distro's, and I have to modify my DHCLIENT.CONF file on it to ...
7
votes
6answers
4k views

Update hostname from Debian machine with DHCP to a Windows 2008 DNS server

I have a XenServer installation with Devian (lenny) machines created on a daily basis using a script which creates the machine from a template and assigns it with a new hostname. Our network has a ...