1
vote
1answer
764 views

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 ...
0
votes
0answers
57 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 ...
3
votes
1answer
435 views

dhclient: What does “RTNETLINK answers: File exists” Mean?

I wanted to update the DHCP lease of an Amazon EC2 instance, so I executed the following command: user@host:~$ sudo dhclient Following that, the system's DHCP lease is updated successfully updated. ...
0
votes
0answers
51 views

dhclient doesn't get/ack offer on macvlan interface

Following this is excerpts of logs when trying to configure a macvlan interface. For some reason unknown to me, dhclient doesn't seem to get/ack the offer, how come? --- /etc/network/interfaces auto ...
0
votes
0answers
18 views

Trouble with dhclient and dynamically updating reverse maps

Has anyone been able to get dynamic updates to in.addr-arpa zones working via linux dhclient? I can get forward maps to update # service network restart Apr 7 15:25:24 i-d40976dd dhclient[26054]: ...
1
vote
0answers
104 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 ...
1
vote
1answer
392 views

Configuring linux to be visible in microsoft DNS domain

I've been trying to have one of our linux box available in the windows domain. The linux box is a ubuntu server without gui or X installed. All manipulations are done from ssh. Linux box: ...
1
vote
2answers
305 views

DHCP issue in our network, could it be hidden 2nd DHCP server?

Something weird happened today. We have a TP-LINK wifi router in our office distributing a pool of IPs 192.168.80-200. There are some windows and some linux boxes. One of the linux boxes (CentOS) ...
2
votes
1answer
351 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"? ...
7
votes
3answers
5k views

Register A records for my Linux box on my Windows 2008 DNS/DHCP server

I've a network which is mainly Windows: Windows 2008 server (with DNS/DHCP as well as AD), and various mainly Windows machines (servers, XP, 7). I know trying to add few Linux boxes, and can't make ...
1
vote
2answers
422 views

dhclient append settings from multiple DHCP servers

I have a server with two interfaces connected to two separate networks, using DHCP for both. When dhclient is writing /etc/resolv.conf, I would like it to append settings that aren't already there. ...
2
votes
2answers
931 views

Linux:/sbin/dhclient to bind to a specific interface?

I'm running RHEL5.5 and have several network interfaces (eth0, eth1, eth2) on the machine. I wish to make /sbin/dhclient bind its UDP port 68 on specific interfaces (eth0 and eth2) but when I do ...
1
vote
3answers
2k views

DHCLIENT.CONF System variables

I've just a little question. My DNS Servers are updated by our DHCP Server (Microsoft Windows 2003 R2 SP2). My clients are Debian Linux Distro's, and I have to modify my DHCLIENT.CONF file on it to ...