All Questions
27 questions
0
votes
0
answers
264
views
kea-dhcp-server logs vs isc-dhcp-server logs
So switching from isc to kea dhcp server I can't seem to find "device name" (in this example, Chromecast-Ultra) in the log anymore.
I.e. with the isc dhcp server I would get:
Jun 2 23:45:...
- 66
2
votes
2
answers
1k
views
No network from minimum net install
I did a minimum net install, but my new system is not starting the network automatically -- No IP address with my eth0 device.
I installed dhclient package myself but that doesn't help. I thought it ...
- 1,127
0
votes
0
answers
1k
views
Ubuntu server 20.04: set ip isc-dhcp-server: network failed
I have set up isc-dhcp-server over Ubuntu server 20.04. Isc-dhcp-server starts well.
To set up my local network, I used:
a pc to host isc-dhcp-server
a pc as a client
a switch to interconnect server ...
- 131
0
votes
1
answer
2k
views
Fixed address on DHCP server isn't working
I'm running Ubuntu 20.04 as a DHCP server and I tried to assign a fixed address to a client which is another Ubuntu os on a Virtual box, and both of them are in the same internal network, but, it ...
- 23
1
vote
2
answers
2k
views
Keep file permissions on dhcpd.leases after reboot on Linux
We have a Linux machine on which we run our .NET Core app. This app is a web UI which is used to display and configure a system of EEPROMs. The app reads the dhcpd.leases file, located in the ...
3
votes
1
answer
7k
views
18.04 Server Systemd DHCP hangs on DISCOVER, dhclient works
Just installed ubuntu server 18.04. I am unable to get a dhcp lease using systemd-networkd, but using dhclient works fine.
With SYSTEMD_LOG_LEVEL=debug I get:
$ journalctl
...
Apr 29 10:14:09 ...
- 208
0
votes
0
answers
167
views
Why does my dhcp server assign 2 different IPs to the same client NIC?
My dhcpd is getting DHCPREQUEST packages for 2 different IPs from the same MAC address on the same (linux-ubuntu-16.04) client. Snip from the syslog:
Jun 20 09:56:13 infranet dhcpd: DHCPREQUEST for ...
- 11
4
votes
2
answers
37k
views
How can I get isc-dhcp-server/dhcpd to listen on one interface only?
I would like my isc-dhcp-server instance to listen on my LAN interface only because I'm investigating an issue with my "WiFi router" and configured INTERFACES='p18p1' in /etc/default/isc-dhcp-server ...
- 6,409
5
votes
2
answers
39k
views
Step by step guide to setup a DHCP server / client configuration in VirtualBox
I'm trying to implement DHCP on two VirtualBox machine, which both are running Ubuntu 16.10 (One as client, one as server) and the host is a Windows 10.
How do I go about doing this?
A step by step ...
0
votes
0
answers
293
views
ISC-DHCP server disabled, but "ip address show" still show local IP assigned for eth0
I installed and used ISC-DHCP server for a while for local network, then stopped it as don't need it anymore.
sudo service isc-dhcp-server stop
I also changed back configuration changes of ...
- 831
5
votes
2
answers
26k
views
isc-dhcp-server disabling and configuring
I've installed isc-dhcp-server just for a one-time task. So basically, after task is completed I dont't need it anymore: should I just uninstall it?
Or it possible to disable it completely?
The ...
- 831
1
vote
0
answers
805
views
Cannot find network interfaces / devices
I'm trying to set up a private network between a few VMs running Ubuntu. For this specific configuration, I need to enable eth1 - eth9. For some reason eth1 turns on fine (using ifconfig eth1 up, but ...
- 11
2
votes
0
answers
2k
views
How to show the reserved leases that dhcp has on file?
I want to check on the reserved leases (called "fixed-address" in the config files) of my dhcpd. To get all the info about the free dynamic ips is no problem, but the reserved one that get written to ...
- 41
0
votes
1
answer
1k
views
configuring dhcp with dynaminc ipv4 and ipv6 address
i just want to know that is that possible to configure dynamic ipv4 and ipv6 address on eth1. i tried ipv4 is working but ipv6 doesn't. if yes then how.
If not then what should i do. Because i want ...
- 27
9
votes
1
answer
19k
views
how to set default gateway in dhcpd6.conf
IPv6 dhcp server would like to set default gateway for all clients. For ipv4 it can done by adding option routers <gateway-addr> inside subnet. But what needs to be added for ipv6 configuration?
- 307
0
votes
2
answers
1k
views
Unable to set up DHCP and TFTP
I want to transfer my kernel image to beaglebone black, and the guide mentions that I should have already set up DHCP and tftp on the host machine.
I have set up the TFTP using:
sudo apt-get install ...
- 101
11
votes
9
answers
107k
views
DHCP server won't start. Gives 'Not configured to listen on any interfaces!' even when configured
I have just setup isc-dhcp on my server. I even setup the correct interface. But still the dhcp server won't boot. Its says Not configured to listen on any interfaces! in the syslog. And when I try ...
- 2,815
-2
votes
1
answer
1k
views
DHCP3-server not working correctly
I installed dhcpe-server with apt-get install dhcp3-server, and I want to configure it on terminal. When i type dhcp i just see these :
dhclient dhclient-script dhcpd dhcpx
I tried to start its ...
- 73
8
votes
1
answer
23k
views
domain name in dhcp
I want to configure DHCP on 14.04. So I downloaded isc-dhcp-server from the repository.
In configuration file I see these two line which are not commented.
What is the usage/purpose of the ...
- 10.5k
0
votes
1
answer
8k
views
ISC-DHCP-SERVER (primary/secondary) - Can Load Balancing Be Disabled?
When I was hired at my company, I quickly determined that one of my highest priority projects would be to improve our ancient DNS/DHCP setup. It was running on an Ubuntu-based workstation-grade server ...
- 361
8
votes
1
answer
122k
views
How to reserve IP Address in DHCP Server
I install DHCP Server with https://help.ubuntu.com/lts/serverguide/dhcp.html
but I need to make reserve IP addresses for specific machine (192.168.1.XXX) and further to assign a name to each machine ...
- 143
0
votes
1
answer
4k
views
wicd Failed: Unable to get IP address
I have an old laptop (Thinkpad T30) and I have installed lubuntu 10.04 on it. NetworkManager could see the available wifi but the bottom was gray out. It seems that it is an unsolved-bug in wifi and ...
- 151
1
vote
1
answer
651
views
Dhcpd: I have 2 Linux Ubuntu Servers running DHCP. Is it possible to install a 3rd DHCP server (which will run Windows Server)?
Im learning /etc/dhcpd.conf, and set up 2 dhcp servers that are running Ubuntu 1204. Do you know if I can make a 3rd dhcp server, but I want this one to run Windows DHCP (not AD, just Dhcp and ...
- 11
3
votes
1
answer
7k
views
ISC-DHCP: Battling to get the host name from the dhcp script
Server OS : Ubuntu 12.0.4.1 LTS Server
Desktop OS : Ubuntu 12.0.4.1 LTS and Windows 7
I have followed an article on the net on how to update a powerdns database.
ISC DHCP and PowerDNS
How ever I am ...
- 81
0
votes
1
answer
2k
views
Configure ISC DHCP server "routers"
My challenge is trying to find a conditional way to change the order of the default gateways used in "option routers" parameters. Perhaps on receiving a DHCPDISCOVER message.
So the first client ...
- 11
3
votes
2
answers
7k
views
testing dhcp server locally on one physical machine with virtual machine
I'm writing simple program to configure and monitor DHCP server on my Ubuntu 12.04.
What I'm trying to achieve that my physical machine will be DHCP server and my VM (virtual machine) get one lease (...
- 61
4
votes
1
answer
336
views
Why using DHCP service?
A few simple questions for a total beginner:
1)Why use DHCP? I am running a small home-network: 1 desktop computer and twp lap-tops. What is the big advantage in DHCP for me? What configurations does ...
- 4,239