05-05-2010
Quote:
Originally Posted by
dunkar70
What values are you trying to preserve? You can use the network manager to specify values for DNS servers (i.e. opendns) if you do not want to use the values provided by your ISP. You can also configure your router, in most cases, to provide specific values with the DHCP service.
Be aware that locking down the resolv.conf file will prevent DHCP from updating your gateway and DNS server information. If you travel to places with WIFI hotspots, you will not be able to connect unless you manually update the file.
Well I'm running ubuntu server so the computer goes nowhere and a static ip has been configured so I don't want dhcp configuring anything.
It is also running its own dns, bind9 installed.
So iff the resolv.conf is not pointed to the server its self than the lookup will be done wrong.
The chattr +i solution worked for me but I'm still looking in to a way for disableing the networkmanager.
I have googled but I did'nt found a solution for this yet..
10 More Discussions You Might Find Interesting
1. IP Networking
I am new to unix. I have edited the /etc/resolv.conf. It shows
domain name
ip address
ip address
These are the same ips of the dns I use for windows. Still I get no name resolution on the internet. I can ping external ip's is there anything else I need to check? (1 Reply)
Discussion started by: rpnhavoc
1 Replies
2. UNIX for Dummies Questions & Answers
Hi ,,still struggling with unix ,,the system is running sco openserver release 5 and have dsl installed ,, the dsl modem is a bt router which in turn is connected to a vpn hardware router,, which also serves internet to the whole network ,, but i still cant connect to the internet via the unix box... (10 Replies)
Discussion started by: b03der
10 Replies
3. SuSE
I want to have 7 search domains in my resolv.conf, but it seems to like only the first six.
I read somewhere that the OS will only recognize the first 6 (or the first 154 characters). Is that the case with SUSE 10?
thx
-Kevin (2 Replies)
Discussion started by: kjbaumann
2 Replies
4. Solaris
Hi I have DNS setup on Solaris 10 thought it isn't reoslveing Internet addresses properly
If I traceroute The UNIX and Linux Forums - the Top UNIX & Linux Q&A on the Web, I get to a hop to my DSL router but no further hops
- DNS Client & Multicast services are running
- nsswitch.conf is... (1 Reply)
Discussion started by: stevie_velvet
1 Replies
5. Shell Programming and Scripting
HI ALL
I am making a script,That will does the following,I am in search of ideas
1.Script will comment all existing the entries in resolve.conf
2.Add new entries like this
abc.example.com
192.168.1.x
I can use sed to add comment. (8 Replies)
Discussion started by: aliahsan81
8 Replies
6. UNIX for Dummies Questions & Answers
Hi everyone
A quick question during a audit this was determined to be a security issue
In the resolv.conf there is a “.” At the end of the domain name
Like this
domain mydomain.com.
I which to understand the function or significance of the .
thk (3 Replies)
Discussion started by: Ex-Capsa
3 Replies
7. UNIX for Dummies Questions & Answers
Hi all,
I am doing an assignment and there is something I am confused about.
The requirement is to set up the DNS and sendmail to two domains: lab1 and lab2, with hosts of mail.lab1 and mail.lab2 both acting as DNS server and email server, and send mail from root@lab1 to root@lab2. However, it... (4 Replies)
Discussion started by: tetelee
4 Replies
8. Red Hat
hi,
I use red hat linux .
When I start up network service .
I get below error in eth2
root@vls etc]# service network restart
Shutting down interface eth2:
Shutting down loopback interface:
Bringing up loopback interface:
Bringing up interface eth2: RTNETLINK answers: File exists
Error... (10 Replies)
Discussion started by: chuikingman
10 Replies
9. Red Hat
Hi all, :(
I am facing issue while I have updated in resolv.conf, after nework service restart, it was automatically deleted IP from resolv.conf file.
Could you please let me know what is the reason resolv.conf deleted any IP which I have manually updated, but it store only my router IP... (3 Replies)
Discussion started by: Pradipta Kumar
3 Replies
10. Solaris
Hi,
I've installed Solaris 11.3(live media) and configured DNS. Everytime I reboot the server, resolv.conf got deleted and it created a new nsswitch.conf.
I used below to configure both settings:
# svccfg -s dns/client
svc:/network/dns/client> setprop config/nameserver = (xx.xx.xx.aa... (1 Reply)
Discussion started by: flexihopper18
1 Replies
LEARN ABOUT DEBIAN
dhcp-helper
DHCP-HELPER(8) System Manager's Manual DHCP-HELPER(8)
NAME
dhcp-helper - A DHCP/BOOTP relay agent.
SYNOPSIS
dhcp-helper [OPTION]...
DESCRIPTION
dhcp-helper is a DHCP and BOOTP relay agent. It listens for DHCP and BOOTP broadcasts on directly connected subnets and relays them to DHCP
or BOOTP servers elsewhere. It also relays replies from the remote servers back to partially configured hosts. Once hosts are fully config-
ured they can communicate directly with their servers and no longer need the services of a relay.
OPTIONS
The only required option is at least one DHCP server to relay to. The simplest way to configure dhcp-helper on a router is just to give the
interface to the network containing the DHCP server with a -b option. All the other interfaces present on the machine will then accept DHCP
requests. On a machine which does not have an interface on the network containing the DHCP server, use a -s option instead.
-s <server>
Specify a DHCP or BOOTP server to relay to. The server may be given as a machine name or dotted-quad IP address. More than one
server may be specified.
-b <interface>
Relay to a DHCP or BOOTP server using broadcast via <interface>. This eliminates the need to give a server address. <interface> is
automatically added to the list of interfaces which will not receive DHCP requests.
-i <interface>
Specify which local interfaces to listen on for DHCP/BOOTP broadcasts. If no -i flags are given all interfaces are used except those
specified by -e flags and those specified by -b flags.
-e <interface>
Specify which local interfaces to exclude.
-p Use alternative ports (1067/1068) for the DHCP client and server.
-v Report the software release version and copyright information.
-d Debug mode, do not change UID, write a pid-file or go into the background.
-r <file>
Specify an alternate path for dhcp-helper to record its process-id in. Normally /var/run/dhcp-helper.pid.
-u <username>
Specify the userid to which dhcp-helper will change after startup. The daemon must normally be started as root, but it will drop
root priviledges after startup by changing id to another user. Normally this user is "nobody" but that can be over-ridden with this
switch.
NOTES
Dhcp-helper requires a 2.2 or later Linux kernel. The "Linux packet filter" and "packet socket" facilities are not required, which is the
chief advantage of this software over the ISC DHCP relay daemon.
AUTHOR
This manual page was written by Simon Kelley <simon@thekelleys.org.uk>.
DHCP-HELPER(8)