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Questions tagged [dhcpd]

81 questions
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ISC DHCP Server scope error

Why am I getting the following error after modifying my dhcpd server config? option space definitions may not be scoped
AXE Labs
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Pass kernel boot parameters from dhcpd.conf for a host group?

Is it possible to configure dhcpd.conf such that a specific host group would use an additional kernel boot parameter passed on to the kernel loading? Thanks!
Pavel
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Cisco ASA5505, packet trace shows bootps and bootpc traffic is dropped on DMZ interface

As the title already states, I have a problem getting DHCPd working on the Cisco ASA5505 version 7.2 with ADSM 5.2 with the basic license. Its an older one I know, and every time I tend to forget how this machine works. Anyway, I have 3 VLAN's…
Johannes
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set search domain on dhcp server without changing domain name

Suppose my company's domain is "company.com", our department's domain is "dept". How to set dhcp server in order to let our department's computers to search company.com? Or I have to set up a dns server? I use Linux as dhcp server, "option…
siyuan
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Switch sending DHCP packets to wrong VLAN

I have a basic remote site with a Cisco Catalyst 2924XL switch. There are 2 VLAN's at the site: 1 Default 2 Wireless There is a single server connected via a single ethernet cable, VLAN 1 is native/untagged and VLAN 10 is tagged. The is CentOS…
fukawi2
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overlay DHCP pool on top of exiting network

I have a network that was all statically assinged in the past, moving it to DHCP. Some hosts, we have as reservations, but not all of them.. Our server is running bind dhcpd on cenotos 5, with webmin to configure. If I create a "pool" of ip's…
Brian
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Does slave bind9 DNS server answer with dhcpd DDNS updates included?

When I set up ISC dhcpd with a primary and secondary as failover and I have bind9 set up as master/slave and I configure the dhcpd so that it sends the ddns updates also to the slave dns that is set up to forward the updates to the master. If the…
luzze
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Untangle NG Firewall DHCP options based on MAC address / IP address?

We are trying to set DHCP options based on IP address. Scenario: We have 50 systems in network and want to configure some systems with google DNS and other systems with internal DNS. I tried below settings, but they are not…
Achyut Kumar Ch
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Manage UniFi DHCP reservations on UDM via shell

I'd like to be able to manage DHCP reservations on my Ubiquiti Dream Machine (UDM) directly via shell. I've tried to locate dhcpd or dnsmasq configuration files that can be edited and persist through reboots or upgrades but am coming up blank. Is…
SamErde
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Configure a DHCP server with isc that gives the clients IPs depending on the OS

The problem is that I cannot put a static IP or filter by mac because some clients have dual boot and use both Windows and Ubuntu, I need to be able to somehow distinguish between both OS and both with the same MAC address. How can I solve…
vicentG
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Multiple name matching statements in dhcpd.conf

Can a class have multiple match hostname statements, e.g. match if substring (option host-name,0,2) = "foo"; match if substring (option host-name,0,3) = "DESK" ?
Thurisaz
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ISC DHCP for relay agents

I would like to configure DHCP server for my networks, but in the same time, i don't want to setup dhcp server on the network where the server itself is. DHCPD insist to configure subnet declaration for the network of the ens192 interface (which i…
Michal Žila
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ISC-DHCP and BIND 9 DNS: DDNS update fails for /27 subnet

I have a problem with DDNS update with ISC-DHCP server. My /etc/dhcp/dhcpd.conf subnet section that doesn't work is: subnet 193.198.186.192 netmask 255.255.255.224 { range 193.198.186.200 193.198.186.222; # MT 20211210 option subnet-mask…
mt42
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dhcpd server invalid mac detection

On my dhcp configuration, i have on commit hook to save device information. My problem is some of the mac addresses becomes invalid: 8:7c:39:cf:b6:3f - this should start with zero 8:d0:b7:52:f9:68 - also this my dhcpd.conf set clientmac =…
hodl
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Cannot ping anything on intranet or internet when connected to second subnet in isc-dhcp-server

On my local network, I've got Ubuntu Server running isc-dhcp-server and named. I have a lot of devices that I've assigned static addresses to, and up until now have assigned a small range of IP addresses for unknown devices. This was on a single…
Jeremy Wilson
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