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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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split dhcp subnet in two parts

I am trying to split isc dhcp subnet, so that in one part(0..128) I have only reserved IPs, and in the other part(128..255) - dynamic range. I tried this configuration(bellow), but I always get a dynamic range from part 2.. even I am booting…
user1908375
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DHCPv6 not working when UFW is enabled (Ubuntu 16.04 LTS)

So, as the title says, I setup a isc-dhcp-server for DHCPv6, which is working as long as UFW is disabled. Once enabled, though I have all the necessary rules in place, and UFW is enabled for v6, it stops working. My rules are: xxx@deadpool:/etc/ufw#…
lightxx
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Block DHCP server from other network

I have problem on PC's (Windows 7) with two network interfaces, sometimes nic that is supposed to be in network 10.1.19.0 has address from 192.168.0.0 My networks: 192.168.0.0/24 with DHCP running on DrayTek router Vigor 2925. 10.1.19.0/24 with DHCP…
exxon
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"match hardware" in dhcpd.conf not working

I've been trying to get mac addresses with a certain OUI into a certain address pool. I haven't been able to get it to work at all. Here is a snippet of my dhcpd.conf and how it's applied. class "testphones" { match hardware; } subclass…
imlepid
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Multiple interface Red Hat 6 ISC DHCP Server sending Incorrect PXE next-server

My setup: Red Hat 6.7 isd dhcp server 2x networks connected (A and B) One DHCP pool configured on Network A When I had this server set up on a single network ("A") it worked fine, now that I added a second network ("B") the DHCP server is sending…
phealy3330
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Traffic control. Prevent unauthorised clients to use IPs outside dhcp range and connect to network. Ubuntu server

I'm new here. I'm looking for a way to prevent my network users to connect to internet using static IPs on their devices outside DHCP range (dhcp range: 10.5.0.1-10.9.254.254). It's like denying device if IP don't mach MAC and vice versa as I have…
Matt Markevičius
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DHCP issue with Cumulus and ESXi

So my switch has Cumulus Linux running on it and I have ESXi running in my network. So my main network is on 172.22.0.0/24 which has my my esxi. The networks I want esxi vms to run on is 172.22.20.0/24 172.22.10.0/24. So the .20 serves dhcp fine and…
madmanali93
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Assign more than one IP Address to the same MAC Address on Linux ISC-DHCP Server

I have the following question: One Linux DHCP server in pool mode, because of the step of fabrication, all the products have the same MAC Address that is changed at end of line, the boards use ethernet to record they file system, and for volume of…
Juliano Oliveira
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Weird behavior with multiple pool inside shared networks on isc-dhcp-server

I have a weird behavior on my dhcp-server, I am using a load balance configuration and using multiple pool inside that shared-network, I have this configuration: shared-network "my-shared-network" { subnet 186.88.128.0 netmask 255.255.224.0 { …
Roberto De Oliveira
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Can I configure ISC DHCP to issue the same fixed-address to every client?

I have a handful of devices which are normally in separate networks (or perhaps not even connected to a network), and they use DHCP to get their IP addresses. Now I would like to run some script on each of them, eg. to update their firmware. I want…
Caloboletus
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Symmetric DHCP failover configuration

I have set up a DHCP server on CentOS 7. It runs beautifully, however due to business demands, we are expanding to another site far away. This gives us the opportunity to host a failover DHCP server at this seperate location. The two locations will…
Shane
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ISC DHCP Server listening on virtual interface

I've got an ISC DHCP server 4.2.2 (Debian Wheezy) working. I need to add a second scope for unknown clients that gives them a bogus address (mostly for troubleshooting purposes). However, nothing I try seems to work. Truncated dhcpd4.conf file below…
user2891127
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dhcp relay with failover to local service

I'd like to set up a dhcp server which normally relays to a central site, but has a pool of addresses to hand out if the link to the central site goes down. I'm using isc dhcp server on Debian, but the isc server and relay agent are separate…
AlexKing
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Blacklisting MAC addresses, but they still take a DHCP lease

At my workplace, we have a Public Wifi network, as well as our Private Wifi network. The Private side has access to see other computers, the printers, servers, and access to the Internet. On the Public side, the users need to authenticate with a…
Canadian Luke
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Binding ISC DHCPD to a virtual (heartbeat) interface

I had a DHCP server that acted as a relay endpoint and worked fine. let's say this is a solo machine with eth0 with an ip of 192.168.0.10 I needed to bring this server down and join it to a cluster, so, eth0 will be different, but, the ip…
William Hilsum
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