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Questions tagged [isc-dhcp]

ISC DHCP is open source software that implements the Dynamic Host Configuration Protocols for connection to a local network. It is a reference implementation of those protocols, but it is also production-grade software, suitable for use in high-volume and high-reliability applications. DHCP is available for free download under the terms of the ISC License, a BSD style license.

ISC DHCP is open source software that implements the Dynamic Host Configuration Protocols for connection to a local network. It is a reference implementation of those protocols, but it is also production-grade software, suitable for use in high-volume and high-reliability applications. DHCP is available for free download under the terms of the ISC License, a BSD style license.

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Is the native DHCP client for MacOS X able to send "Vendor class identifier" (opTag 60) in a DHCP request?

Is it possible for MacOS X (current version or in any previous one) to easily force DHCP client to send to DHCP server, at the beggining of the conversation - in DHCPDISCOVER packet - option "Vendor Class Identifier" (60) set to some value? I know…
plluksie
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Automatic subdomain wildcard for DHCP-DDNS additions?

I'm running dhcp-4.0.2 server and bind-9.6.1-P3. When a new Mac OSX DHCP client with the name "harry" connects to the network, the DHCP server gives it a lease, and adds appropriate A & PTR records via DDNS. This works fine; harry.my.domain points…
Igor Clark
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isc-dhcp-server does not push domain-name to client

I have installed the DHCP server (isc-dhcp-server) on my Ubuntu 20.04. The client computer (also a Ubuntu 20.04 Desktop machine) gets assigned IP address, but id doesn't get the assigned domain-name (defined via option domain-name…
rogaloo
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Isc Dhcp-allow only 1 lease from opt82 tag

I'm implementing an isc dhcp server that will be utilizing option 82 tags from our switches to hand out dhcp information/addresses I'd like to deny multiple requests with the same tag (if someone decides to connect a switch to our switch to have…
Anthony
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ISC-DHCPD & BIND9: Dynamic DNS interaction

I am running isc-dhcpd-4.4.1 and BIND 9.11.6 daemons on FreeBSD 11.2 server for a small company. dhcpd serves a number of Windows stations (assigning them mostly static IP addresses), several special-purpose devices (getting static public IP…
George JL
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ISC DHCP assign pool/subnet to certain MAC addresses

Hej, desperate here! I'm running isc-dhcp-server 4.1 here (with webmin but that's another topic) and want to give some options (tftp-server and bootfile) to network-components that I can identify by MAC address and vendorstring. However, I got to…
Jeremiah
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isc-dhcp-server doesn't start automatically

Running on Astra Linux 1.3, my dhcp service (isc-dhcp-server) is well-configured now and work as expected with a slight nuance - it works only when it's started, but a system don't run it at startup. Doing sudo update-rc.d isc-dhcp-server defaults…
Dmitry Ilukhin
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PXE boot from an other Network

so i got an problem. I set up an Router with Debian9, its task is that Clients in the Network are able to boot from an PXE Server( the PXE Server is on an other Network) I heard sth. about IP-Helper RelayAgent But i didnt find any documentation for…
Nils Schöffel
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dhcpd rewrite invalid client hostname for ddns

Im using isc-dhcpd and bind9 to do ddns. It is mostly working, but updates from clients with invalid names, like "leif_opo5" or "Danfoss Connect CC" are rejected. I changed the hostname for my phone to leif-opo5, and it got registered, but I can't…
Lenne
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DHCP DDNS + Samba AD?

I'm working on moving a small business network away from a Windows Small Business Server. I've set up the active directory using Samba, and it all works well, but I see one potential problem: Currently we depend somewhat heavily on DHCP-based…
Dessa Simpson
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Is it possible to declare two ethernet interfaces for the same host in dhcpd.conf?

Ubuntu Server 16.04 with isc-dhcp-server. Within the /etc/dhcp/dhcpd.conf configuration I have stated a reserved address for a host provisioned with dhcp this way: host laptop { hardware ethernet aa:bb:cc:dd:ee:ff; fixed-address…
dienteperro
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Block DHCP clients based on strings in hostname

Using isc-dhcp-server on Debian Jessie, I'd like to block DHCP requests based on parts of their hostnames - specifically, if the hostname contains the RegEx string somewhere "iPhone|android-". My current solution is to wait until they have a lease,…
Canadian Luke
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suse isc dhcpd dhcrelay no ipaddress

I have the following setup: Client --> eth2(10.4.0.1/16) - router / - eth1(10.3.0.1/16) --> dhcp-server(10.3.0.150) dhcp-relay If the client starts a dhcp-request it receives the dhcp-relay and the dhcp-relay forwards…
JonesK
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Can't bind isc-dhcp-server to interface

OS: Debian Wheezy DHCP Server: isc-dhcp-server 4.2.2 I need dhcpd to listen to the specific interface on a machine with 2 active NICs. I added INTERFACES="eth5" to /etc/default/isc-dhcp-server but dhcpd still listens to all…
Vladimir M.
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Why use DHCP failover rather than just configure multiple ranges?

Specifically regarding ISC dhcpd (but information regarding the principle in general), what are reasons for choosing a fail-over configuration instead of each server having their own range? Assuming you have more IPs to allocate than necessary, it…
Samuel Harmer
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