Questions tagged [dhcp-option]
The Dynamic Host Configuration Protocol (DHCP) provides a framework for passing configuration information to hosts on a TCP/IP network. Configuration parameters and other control information are carried in tagged data items that are stored in the 'options' field of the DHCP message. The data items themselves are also called "options".
65
questions
4
votes
2
answers
2k
views
Can a DHCP Server detect Windows version?
How can a DHCP server distinguish between Windows 10 and Windows 7 clients?
I want to identify the Windows version of the clients using the vendor class, and assign the specified settings.
I am ...
0
votes
1
answer
140
views
How do I deploy correctly my DHCP Servers with DHCP Option 82?
My Goal is to achieve a seperate DHCP Pool on my switches, how am I able to achieve it on a flat network hosted for a LAN-Party. Which means seperate VLANs should be avoided
We're talking about ...
1
vote
1
answer
275
views
Stuck with DHCP option 43/60 with ISC
if´ve already checked the existing threads for option 43, but I don´t get it for my case.
I want to implement a thin-client auto-registration in our productive thin-client subnet - and I´m not DHCPD ...
- 11
-3
votes
1
answer
387
views
Windows Server 2019 DHCP Option 33
Noticed there is an option in DHCP for static routes, looks like it is using a server name and an IP that you assign, is this the same thing as adding an entry into the host record like we used to do ...
2
votes
0
answers
1k
views
OpenVPN and dhcp-option domain-route for Windows/Linux
I am trying to understand the dhcp-options usage for Windows and Linux (Ubuntu).
There seems to be difference between the implementation.
Using OpenVPN 2.4 server and client, i test on Windows 10 21H2 ...
- 305
0
votes
1
answer
68
views
Windows DHCP IOT retain same IP
I am trying to address a problem.
We have a windows DHCP server and some devices, which we need to replace on needs. The device has a custom DHCP client which sends DHCP-DISCOVERY Packet with ...
1
vote
1
answer
405
views
How to send custom DHCP option on all Offer and Ack packets in kea?
I'm using the Kea dhcp server, and I want to use the DHCP options to send data to the server's clients. Following the instructions here, I listed the option with the "always-send": true ...
- 61
0
votes
1
answer
1k
views
Using DHCP reservations instead of static IP address configuration for servers
I was wondering if it is better to use DHCP reservations for servers and computers that must have static IP address, excluding DHCP servers themselves, Domain Controllers, and DNS servers of course, ...
- 263
1
vote
1
answer
270
views
DHCP: When (which step of DORA) do options get sent?
Everyone knows that there are 4 steps to a DHCP handshake.
Everyone talks about DORA (Discover, Offer, Request, Ack) and the "happy path" to getting an address, and this is the most common ...
- 627
0
votes
1
answer
111
views
How can I implement single letter domains for LAN internet browsing using dnsmasq?
In our LAN I have several services running in multiple hosts, and clients using DHCP with dnsmasq.
My goal is that any user can type a single letter (e.g. c) in the browser search bar and get in ...
- 101
0
votes
1
answer
172
views
How i can assign /32 ip address to openstack nova instance without float ip?
I'm developing a custom panel for my openstack home lab via rest api.
I've investigated Hetzner cloud ip (v4) addressing mechanism and i found it is like this:
It is assigning /32 valid ip v4 address ...
0
votes
1
answer
463
views
isc dhcp multiple option 240 in same subnet
I'm fairly new to isc dhcp.
I'm working at an ISP and need to provide our STB's with an option 240, and it has worked fine for years, the problem now is that we are getting a newer model, that needs a ...
0
votes
1
answer
543
views
DHCP Pools on Ubuntu DHCP server not working properly
Mac addresses ending with "55:a3" and "56:2a" are also ending up in last pool
123 match if binary-to-ascii(16,8,":",substring(hardware, 5, 6)) = "55:a3"; ...
- 111
0
votes
1
answer
1k
views
Define multiple filename options in DHCP config based on different range
Intro
I am trying to use a centos box for DHCP and TFTP function, for iPXE boot.
I have one subnet configured for DHCP, but it has multiple ranges and each range has a different iPXE boot URL.
Problem
...
0
votes
0
answers
488
views
How to get custom option on client from ISC DHCP server
Over ISC-DHCP server I wanted to define a custom DHCP Option, for which I am using below config
option imagefile code 224 = ip-address;
subnet 192.168.29.0 netmask 255.255.255.0 {
range 192.168.29.1 ...
- 111