dhclient is the DHCP client for Linux and UNIX, created by the Internet Software Consortium. It is used to configure network interfaces using DHCP or BOOTP protocol, or can be used to assign static configurations.

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CentOS 7 is not setting my gateway from DHCP

I have a Minimal Install of CentOS 7. I have disabled the Network Manager as I want to setup my network the "old school" way. systemctl stop NetworkManager systemctl disable NetworkManager ...
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Issue with RHEL7 and disabling NetworkManager

Okay community, let's see if we can figure this one out, cause I'm out of answers. Where I work I am setting up a bunch of RedHat Enterprise Linux servers. There is a collection of RHEL6 and RHEL7 ...
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382 views

How to DHCP request a second, different, IP for the same physical interface?

(Similar to this question, but with two different DHCP-assigned IPs) Is there any way to let dhclient or dhcpcd request two different IPs for one physical interface, e.g. via virtual interfaces eth0 ...
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520 views

How to pass a vendor-specific options to a DHCP server using dhclient?

I need to send vendor-options to DHCP server using dhclient (ISC). As I understand I need to describe that options in the dhclient.conf. Do I need make new "space" for options? Or I can do "send"? ...
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163 views

dhclient asking for new routing every 1500 seconds, removing my static routing, cron not working

I have a problem with cron job on my ubuntu server 12.04. I have two internet providers - one for fast speed, second - for local resources. So, I'm using command route to up the static routing for ...
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87 views

Can we force dhclient to not renew ip rules?

I've overridden the ip routing rules on my RHEL machine by adding custom logic in a new script ifup-local that is run immediately after a new interface is attached. ...
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192 views

How to send several instances of the vendor-specific options to a DHCP server using dhclient?

I need to send vendor-options to DHCP server using dhclient (ISC). I've added following lines in the dhclient.conf: option dhcp6.vendor-class code 16 = {integer 32, integer 16, string}; send ...
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dhclient vpn_tun0 causing internet disconnect after upgrade to ubuntu 15.04

A few weeks ago I installed softether vpnclient on my ubuntu 14.04 laptop and vpnserver on an ec2 instance. The server uses softether secureNAT and the softether dhcp server. My client produces an ...
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“ifup eth0” causes dhclient to bring up more than one interface

Can someone tell me why dhclient is not respecting to only handle the one interface it has been passed? I've seen this multiple times over the years; never figured it out - it's not related to ...
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354 views

ip addr flush dev eth0 removes ipv6 address

I'm trying to write an application that can change the ip address of the local machine. When doing some experimentation, I've noticed that if I freshly connect to a wireless network, I am assigned an ...