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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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Why do I get "No subnet declaration" starting ISC DHCP server on subinterfaces?

I have created two subinterfaces on eth0 : eth0:0 with IP 192.168.10.1/24 eth0:1 with IP 192.168.11.1/24 Configured /etc/dhcp/dhcpd.conf like that: option domain-name-server 194.204.159.1; subnet 192.168.10.0 netmask 255.255.255.0 { option…
someHOW
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DHCPv6: passing delegated prefix to local RA

I currently have an Airport Extreme as my home office firewall. In addition to handling IPv4 NAT, my ISP (Comcast) delegates an IPv6 prefix to the Airport, which in turn assigns the delegated prefix to my LAN interface and sends the appropriate…
caw
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How do I assign hosts to classes in ISC DHCPD?

Suppose I have a bunch of hosts set up like this: host host2 { hardware ethernet 10:bf:48:xx:xx:xx; fixed-address 192.168.1.2; } host host3 { hardware ethernet 10:bf:48:xx:xx:xx; fixed-address 192.168.1.3; } # etc ... subnet 192.168.1.0 netmask…
hookenz
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DHCP: One NIC and multiple subnets

I'm setting up a Debian to work as a gateway for a small office network. I need to have three subnetworks for different areas within the company and I will define which PCs will get what IP based on their MAC addresses. My question is: is it…
El Barto
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Is it possible to run pre-Lion OS X in an IPv6-only environment without static configuration?

Is it possible to run pre-Lion OS X in an IPv6-only environment without static configuration? From what I've been able to figure out, OS X 10.6.x will acquire an address via SLAAC, but it doesn't appear to support either DHCPv6 or the RDNSS/DNSSL…
larsks
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Where is dhcpd's syslog message formats documented?

I am looking at bunch of syslog messages written by dhcpd. I want to write a quick parser that can deconstruct the message into its component parts, but I don't know what the various parts mean. I assume this is documented somewhere, but my simple…
Chas. Owens
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A Linux DHCP server that will listen on an non-broadcast (tap) interface?

Are there any Linux DHCP servers that will listen to what Cisco calls an "unnumbered" interface, or what others might call a "NBMA" (non-broadcast) interface. I have a Linux system that connects to a number of others using GRE tunnels. The machines…
TomOnTime
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dhcpd.conf "Configuration file errors encountered"

I want to set up the isc-dhcp-server, but the dhcp.conf file generates an error while testing with dhcpd -t: ... /etc/dhcp/dhcpd.conf line 6: expecting a parameter or declaration authoritative; ^ Configuration file errors encountered…
Darth-RPi
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rfc 6939 support for dhcpv6 relay

isc-dhcp-server now supports rfc6939 as of version 4.3, and I would like to be able use it as it is quite nice to be able to just use the mac address to identify dhcpv6 clients. However, I can't seem to find a dhcpv6 relay that supports rfc 6939,…
Bryce Larson
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Samba4 internal DNS and isc-dhcp zone update

Could anybody explain, how to solve this problem with internal samba4 DNS and dynamic zone updates from isc-dhcp? In the logs I have: dhcpd: Unable to add reverse map from 170.5.168.192.in-addr.arpa. to dus-ws-21a.nmedia.local: tsig verify…
kbu
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Prefix Delegation and route creation

I'm using the ISC dhcp server version 4.1 for DHCPv6 prefix delegation on a network. When the server allocates a prefix to a client, the server does not create a route for that prefix to the client that requested the prefix. Here is a feature…
Jonathan Swinney
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DHCP scope for a user class option

In Linux how can I set a DHCP server configuration which will lease IP addresses from scopes which are defined according to user classes. For example the following configuration leases IP addresses according to the first three octets of mac…
Alptugay
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How does broadcasting work on a server with multiple IPs?

Say you have two dhcp servers, A and B. Server A has two IP addresses, 10.0.0.1 and 10.0.0.2. Server B has one IP address, 10.0.0.3. Server A has two instances of isc-dhcp running, one specifying a local-address of 10.0.0.1 and the other specifying…
Mythics
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DHCPREQUEST and DHCPACK spam in logs

I've recently noticed that my android phone (droid dna, although the thunderbolt that I had before did the same exact thing) is rapidly requesting dhcp info my dhcp server (isc-dhcp-server on debian squeeze). I had initially just thought it was the…
lacrosse1991
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Web interface for managing an ISC DHCP server

I am looking for a web interface to administer an ISC DHCP server. I have the setup of one Debian Linux box running an ISC DHCP server and I would like to add a second DHCP server as failover. To facilitate administration for non-UNIX experienced…
GorillaPatch
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