Slackware :: Change Dhcpcd To Dhclient In Startup Scripts?
Jan 13, 2011
I recently upgraded to a Intel i3 cpu and Intel H55 motherboard. This was from an old P4 machine that was running Slackware 13.0. The machine is a single connection to the internet through a cable modem. I moved the hard drives over, and found that dhcpcd would not work with this board in either Slackware 13.0 or 13.1 (after updating). I tried both the Gigabit onboard Lan, an old PCI ethernet card and installing the most recent version of dhcpcd. No luck. Dhcpcd would negotiate the lease with my cable modem, assign an IP address. But after that the process stalled. The internet was unreachable, and no nameservers were printed in /etc/resolv.conf. Manually killing dhcpcd and entering: "dhclient -4 eth0" got me on the internet without a problem. As this appears to be a lingering problem with dhcpcd, I am going to try to use dhclient permanently. Has anyone else moved over to using dhclient? If you have modified your startup scripts in /etc/rc.d to use dhclient.
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Sep 28, 2010
For some reasons, dhcdpd wouldn't connect eth0 at startup and it takes 10 to 15 seconds of timeout. Since I don't really care because I use wifi, I would like to remove auto dhcpcd at startup but I can't fint it anywhere in /etc/rc.*.
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Feb 5, 2011
slackware-current kernel 2.6.35.10-smp for instance if i just want to connect to wep ap. i done
[code]...
it says waiting for carrier and it just time out, im wondering why i read somwhere that its not working good with slackware 13.1
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Jan 20, 2011
I just realized that since I reinstalled slackware on my laptop, the machine is not obtaining an IP from my router during the startup proccess like it used to do before.
Now I see something like:
Code:
dhcpcd: eth0: waiting for carrier
dhcpcd: eth0: timed out
dhcpcd: eth0: waiting 8 sec
and it fails. After I login in KDE, I need to manually renew (or acquire) an IP. Issuing the command
[Code]...
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Nov 28, 2010
For test purposes I'm running Ubuntu 10.10 from a USB stick with a USB WLAN stick.The system finds the WLAN router and acquires an IP6 address, but no IP4 address.With "dhclient wlan0" though it does get an IP4 address and connects o.k.How do I setup the system so that this dhclient call is done by the system at startup (or whenever it is necessary)?
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Oct 13, 2010
this is rather odd actually and has never happened to be before.I recently installed slackware in a toshiba satellite m40 185 laptop and during boot it doesn't get an ip address from the server. the boot messages are of the sort:
dhcpcd: v5.2.2 started
dhcpcd: waiting for carrier
dhcpcd: timed out
[code]....
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May 24, 2011
I am on slackware 13.37 using broadcom-sta and wicd from /extra. Every so often, sometimes really often, my wireless resets it's connection. The only common thread I can see in the system log is at the same time I get 4 messages that "dhcpcd not running"
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Apr 6, 2011
dhclient does not strip or escape shell meta-characters
Summary: dhclient doesn't strip or escape certain shell meta-characters in dhcpd responses, allowing a rogue server or party with with escalated privileges on the server to cause remote code execution on the client.
CVE:
ISC dhclient did not strip or escape certain shell meta-characters in responses from the dhcp server (like hostname) before passing the responses on to dhclient-script. Depending on the script and OS, this can result in execution of exploit code on the client.
CVSS Score:
For more information on CVSS scores, visit [url]
Workarounds:
On SUSE systems, it is possible to disable hostname update by setting DHCLIENT_SET_HOSTNAME="no" in /etc/sysconfig/network/dhcp.
Other systems may add following line to dhclient-script at the beginning of the set_hostname() function:
In environments where filters/acls can be put into place to limit clients to accessing only legitimate dhcp servers, this will protect clients from rogue dhcp servers deliberately trying to exploit this bug.
However, this will not protect from compromised servers.
Active exploits:
Solution:
Upgrade to 3.1-ESV-R1, 4.1-ESV-R2 or 4.2.1-P1. [url]
No patch is available for 4.0.x as it is EOL. Anyone running 4.1.x should upgrade to 4.1-ESV-R2.
Acknowledgments:
Revisions:
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Apr 13, 2011
Does jexec need to be modified? Not clear from the error messages which jexec is
involved.
Result of zypper update...
The following package is going to be upgraded:
dhcpcd
1 package to upgrade.
There are some running programs that use files deleted by recent upgrade. You may wish to restart some of them. Run 'zypper ps' to list these programs.
The following running processes use deleted files:
You may wish to restart these processes. See 'man zypper' for information about the meaning of values in the above table.
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Nov 19, 2010
I manage to connect to my wifi using
Iwconfig wlan1 essid "mywlan" key 1234567890
Then iwconfig wlan1 gives me:
Im using a Alfa Awus036h wifi dongel under Arch disc install, only got wifi on other computer.
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May 25, 2011
I tried to run dhcpcd but it says i need to install it and I need to enable a component called universe. How do I do that?
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Jul 14, 2011
I know questions of the form "wireless not working on <blank>" abound, but here is another! I can't cut and paste since I don't have a connection on the computer I am having trouble with but I will paraphrase the best I can.
lspci output:
0c:00.0 Network controller: Intel ... PRO/wireless 4965 AG or AGN [Kedron] Network Connection (rev 61)
lsmod output (relavent line):
cfg80211 33680 3 iwlagn, iwlcore, mac80211
iwconfig shows wlan0 up and running, and iwlist scanning shows the router. I used to be able to just run dhcpcd wlan0 and connect, but now I get a
"timed out waiting for a valid DHCP server response"
Same deal running /etc/rc.d/rc.inet1.conf (which might be the new way Slack connects to things).
Not sure if it's important, but I have a little indicator light on my laptop that tells me if wireless is running. Before I try dhcpcd, the light is on. After it times out, the light goes out and I have to redo everything (ifconfig wlan0 up etc....) in order to get the light back on.
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Aug 2, 2010
we have a problem with dhcpcd at boot time on any openSUSE version from 11.0 to 11.3. It seems that a number of workstations never send out DHCPDISCOVER or DHCPREQUEST at boot time, we have verified this with packet dumps. The dhcp client progress bar is displayed on the console but eventually times out, goes into background and the system continues booting.This is a problem because the timeout takes a long time and users have to wait. Sometimes the display manager is even started but users cannot using LDAP authentication. Eventually these systems just continue to use their old lease and networking works.Curiously, when we do a network restart after boot, the clients send DHCPDISCOVER/-REQUEST normally, we only have this problem at boot time.
On the server side we're using ISC dhcpcd-1.3.22pl4-223.13 on SLES 10 SP2. I have read about others who had the same problem, they switched from dhcpcd to dhclient. I have also tried this, but for us dhclient is not an option for a number of other reasons. Another thing I have tried is setting DHCLIENT_SLEEP ("Some interfaces need time to initialize. Add the latency time in seconds")o two minutes to give the interface time to initialize.nfortunately this didn't change anything.
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Feb 21, 2010
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I then have to change it manually using the Nvidia X Server settings utility, which is fine. I can then save X settings into /etc/x11/xorg.conf but next startup it does exactly the same again. I have seen a lot of posts in which Ubuntu leaves users stuck in a low res, or even tries to put them into an unsupported res, but nothing quite like this. Is there a Gnome setting somewhere that defines screen res at startup??
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May 17, 2010
I have a dual boot windows 7 and ubuntu karmic and by default whenever i turn on my system it automatically boots into ubuntu but i want windows 7 as my default boot up os, so can anybody please suggest what should i do.
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Mar 29, 2010
Have decided to stop using Hylafax and our two serial modems on our server running Clarkconnect 4.1 (RHE4.1)What file will I go to to edit so the program and two devices don't start up?I disconneted the devices and the log file is full of the attempts to get the modems working
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Feb 22, 2011
I want to know how to change ubuntu startup logo?
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Apr 5, 2010
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May 5, 2010
I want to run some script/command (for setup keyboard layout) on X startup. I need a desktop independent solution, e.g. which works when user starts KDE, Fluxbox or any another window manager.
Users start X server manually by typing startx in console. As I understand, I can use ~/.xsession file to run my script. But when I make ~/.xsession executable, add to the end strings from script and restasrt X nothing happens.
My system is Slackware 12.2. Here is a command I want to run
Code:
setxkbmap -symbols "pc+us:1+ru(diktor):2+us(dvorak):3+ru(typewriter):4+compose(ralt)+
mysym(caps_4)" -types "complete+mytype(four_groups)" -compat "complete+mycompat"
-print | xkbcomp - $DISPLAY &>/dev/null
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Apr 12, 2010
I have noticed a few problems when some screenlets are loaded before some others. I think that "Startup Applications Preferences" should have an option to arrange the order of their execution.
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Apr 13, 2010
I have Ubuntu 9.10 and I want to replace the splash screen with the white Ubuntu logo and the marquee progress bar with that of Xubuntu with those whirling sparkles.
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May 13, 2010
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May 30, 2010
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Feb 21, 2011
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Am i required to reinstall ubuntu (my most of the files are in ubuntu), is there any solution without reinstall.
I find that need to change the boot.ini, but i'm not getting any proper results
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Sep 18, 2010
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Jul 14, 2010
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Jul 19, 2011
HP laptop with Intel graphicsunning Slackware current with a 2.6.38.7-smp kernel.Booting with the "nomodeset" kernel parm works but X gets stuck with a 1024x768 resolution. When booting without, the screen goes black after a few pages scroll by, just at the point where the console switches to a higher resolution. Changing to a different console didn't help, so I blindly log on and type startx, and the screen comes back to life with KDE running at the higher 1366x768 resolution, I try a few apps, the webcam, suspend to RAM, resume, and everything is now working flawlessly so it doesn't look like an X issue.At this point I can change to another console (or exit KDE altogether) and the screen is back on at the higher resolution. Looking at the X log and some dmesg output makes it seem that starting X possibly replaces, reloads or unloads a driver? If this is the case, how can I prevent the conflicting driver from loading in the first place?Quote:
dmesg |grep drm
[ 11.481967] [drm] Initialized drm 1.1.0 20060810
[ 11.637941] [drm] MTRR allocation failed. Graphics performance may suffer.
[code]...
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