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.
Questions tagged [dhclient]
72 questions
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OpenVPN clients' DNS, unwanted ip routes added by dhclient
I've set up an OpenVPN gateway that provides access to a large cloud of IoT devices. Each device has a unique certificate, and upon connection, I grab the "common name" from the cert to make a local DNS name, and publish that via dnsmasq. And for…
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Difference between ifup and dhclient - different result?
On Debian 10 (buster), I configured the DHCP with the MAC address but it does not work.
When i use "ifup" command, the result is wrong.
I need to configure this IP: 192.168.251.11
but DHCP attributes this IP : 192.168.251.143
Example with ifup
#…
BeWog
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dhcp: lease expiration vs. infinite lease
As per RFC2131, when the lease expires the client has to stop using the IP address. So do I understand right that if the lease lifetime is set to infinite on the server, then the client does not need to renew/rebind its IP, and thus the server does…
Mark
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AWS time traveling issues with dhclient
I am a QA software engineer working on integration tests that require changes on the system clock to simulate the pass of the time. When running those tests on AWS EC2 instances I got unexpected behaviours that seem to be related to DHCP and DHCP…
grg121
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Libvirt VM Networking fails to start up after upgrading host from Ubuntu 18.04 to 20.04
I upgraded a server from 18.04 to 20.04. I am using libvirt/kvm to host a number of VMs. Some of the VMs failed to reconnect to the network after the upgrade.
Two VMs in question run Ubuntu 18.04 and Centos 7 and both fail to start up networking…
Ries
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How to include vendor-specific option 17 suboptions 11, 12 and 13 in DHCPv6 solicit/request using dhclient
My request is to include option 17 sub-options 11, 12 and 13 in DHCPv6 solicit/request and I configured the same in dhclient6.conf on my Ubuntu as below.
send dhcp6.vendor-opts…
kottesvaran m
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2 servers show different behavior when DHCP sever goes down
i dont have any control of the DHCP servers on my network and every 2 weeks or so there is an outage of a few hours where my CentOS 7.8 servers do not get responses to DHCP renewal requests. As far as I know these servers are configured exactly the…
jodlgc
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1 answer
how to Check for dhclient in Directadmin
I have installed CSF firewall in CentOS 6 64-bit on Directadmin
dhclient appears to be running which suggests that the server is obtaining an IP address via DHCP. This can pose a security risk. You should configure static IP addresses for all…
Mohammad Alipour Fathkoohi
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3 answers
Ubuntu-VirtualBox-LikeWiseOpen network disaster
I've a virtual machine on VirtualBox 4.1.4 with Ubuntu 11.04. It was working perfectly, but after a reboot something really wrong happened: I wasn't able to connect to the internal network (same for NAT).
$ sudo dhclient -v
Internet Systems…
Sergio
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Different lease duration for dhcp clients
Is it normal in Windows implementation of DHCP Server and DHCP Client that some clietnts gets strange long lease expires time like 15 days?
,,Lease duration for DHCP clients'' setting in DHCP Server is set to 2 days.
sokar
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3 answers
I bought a new IP address from my server host. How do I find out what that IP is...?
I purchased an additional IP for my server a couple days back and I have no idea what that IP is. When purchasing the IP, the only email I received was a notice saying it will take between 24-48 hours for the IP to become usable.
Is there a way to…
dan
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1 answer
DHCP IPV6 Environment
Possible Duplicate:
DHCP IPV6 Environment
in DHCPV4 for discover, request we mention the source ip as 0.0.0.0,what it could be the in DHCPv6.Similarly we mention the multicast address as 255.255.255.255 in DHCPv4 ,what could be the in…
ramulu ponnam
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