Fedora Networking :: DHCP Lease Renewal Failing On Wired Ethernet Connection?
Aug 1, 2010
I'm running an up-to-date Fedora 12 machine with the Gnome desktop (meaning with Network Manager). My network connection is a wired ethernet to a switch which then connects to a Netgear router. For some reason, this machine can't renew its leases with DHCP, so NetworkManager deactivates eth0, taking my machine off the network. I have to click Network Manager and enable eth0, which seems to work every time.
How can I fix it? Here are the relevant bits from /var/log/messages showing a failed DHCP request and then the successful renewal.
Code:
Aug 1 04:00:08 ironton dhclient[12452]: DHCPREQUEST on eth0 to 192.168.1.1 port 67
Aug 1 04:00:08 ironton dhclient[12452]: DHCPNAK from 192.168.1.1
Aug 1 04:00:08 ironton NetworkManager[1261]: <info> (eth0): DHCPv4 state changed reboot -> expire
Aug 1 04:00:08 ironton NetworkManager[1261]: <info> (eth0): device state change: 8 -> 9 (reason 6)
Aug 1 04:00:08 ironton NetworkManager[1261]: <info> Marking connection 'System eth0' invalid because IP configuration expired.
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Jun 5, 2010
I have a Zotac Ionitx A-U. I can't get it to establish an internet connection with the wired ethernet within Ubuntu. The chip is detected, but trying to bring up the connection stalls out at trying to obtain a DHCP lease, like this:
DHCP DISCOVER ...
DHCP DISCOVER ...
No DHCPOFFERS received
Specs:
Ionitx A-U
Ubuntu 10.04 x64 kernel 2.6.32-22 (also didn't work in 9.10)
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Aug 9, 2011
I just upgraded my Ubuntu Server from 10.04 to 11.04. I am having issues with the ethernet connection upon boot. The connection will blink slowly and not stay connected to the network. If I then unplug the ethernet from the switch and then replug it in, eth0 will get a steady connection, at which point I have to run the following command to get everything working.
Code:
sudo dhclient eth0
After running the command I have no issues with the ethernet connection.
lshw -C network
Code:
*-network:0
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May 26, 2010
I've set up a permanent DHCP lease for my MAC address. I did this hoping to resolve the fact that I share my Internet ADSL connection with my wife and my daughter (the latter a great bandwidth hog)!
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Apr 16, 2011
I recently did some troubleshooting on a USB wireless dongle hooked up to my Mint distro. I need the USB wireless to access a home DSL wireless modem out to the Internet. The wireless DSL is on 192.168.0.1
I also have a 10/100 ethernet NIC in the computer, for non-wireless connections. The wired ethernet is all 192.168.1.1. I noticed in /var/log/syslog that there are numerous "DHCPDISCOVER on eth0 to 255.255.255.255 port 67" messages.
Since eth0 has a hard-coded IP, I dunno why DHCP is trying deal with it. Can I turn off DHCP activity against eth0? How to do that?
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Mar 25, 2010
I am puzzled with trying to configure a linux (openSUSE) client to dhcp to eBox DHCP server. I am using dhclient to lease an IP address with dhclient eth0 -s 10.45.48.108 and get a response
openSUSE11232CL1 dhclient: DHCPDISCOVER on eth0 to 10.45.48.108 port 67 interval 4
openSUSE11232CL1 dhclient: DHCPOFFER from 10.45.48.108
openSUSE11232CL1 dhclient: DHCPREQUEST on eth0 to 10.45.48.108 port 67
openSUSE11232CL1 dhclient: send_packet: Network is unreachable
openSUSE11232CL1 dhclient: send_packet: please consult README file regarding broadcast address.
The server reports eBox141 dhcpd: DHCPDISCOVER from 00:0c:29:3e:57:a3 (openSUSE11232CL1.domain.net) via eth0
eBox141 dhcpd: DHCPOFFER on 10.45.200.2 to 00:0c:29:3e:57:a3 (openSUSE11232CL1.domain.net) via eth0
I interpret this as the server receives the request and the client accepting it but the lease does not last long and the connection breaks. what this could be and why the connection breaks? Or my undestanding is totally wrong on how it works and should work? And BTW, where is that README file that's referenced in the message I receive on the client?
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Jul 24, 2010
I have a HP Mini running Ubuntu Desktop 10.04, and I cannot get a wired connection to work. My network card is "Broadcom Corporation BCM4312 802.11b/g (rev 01)", and I have the restricted drivers for the card installed. Wireless works fine, though.
My /etc/network/interfaces:
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Jun 20, 2010
Since that time I moved to Archlinux and I love it. I do however run lubuntu live from a USB for my work PC. I am having a problem with it. I think it's okay to post here because the core of the system is still Ubuntu. I don't think LXDE is the problem. I start up the live environment and it says 'wired connection connected' but I can not load any pages or do anything.
I thought it may be a problem with configuration so I copied down (from Windows) the IP, Subnet, Gateway and DNS. I put them in manually and it doesn't say connected any more and still no connection at all. I am unsure what to do from here. I am not really familiar with Ubuntu enough to try much. I tried to 'dhcpcd eth0' but dhcpcd isn't installed. I guess the default Ubuntu network manager has dhcp enabled automatically.
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Nov 30, 2010
Just noticed that auto connection to my wired ethernet is not being established after restarts I'm making. Never recall this in the past. I do get an auto connect when I shutdown and restart. I'm using 10.04 LTS Lucid Lynx.
Also have noticed that nearly every upgrade over the past week or so is calling for restart to complete the upgrade. Can there be any unwanted problems in doing several upgrades over a period of several days before doing the restart? I'd like to think not.
As you can imagine these two issues together are causing some lost time.
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Jul 24, 2011
I have two laptops (Dell & Lenovo), both have wifi.
I am having one wired Ethernet connection.
I want to share this Internet connection among two system , to access Internet from both the system.
I had tried by creating a wireless network, but was not able to do so.
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Jul 25, 2011
I have installed Ubuntu 11.04 using Wubi through Windows 7. It seems to be working but it will not connect to my wired internet connection. It tells me there is no wired connection, when there is. I used sysinfo and its not showing any network adapter or controller. I have a board with nvidia nforce go 430, could it be a driver issue. It works fine in windows though. Tried using a wireless adapter and all is working. But why doesn't the wired ethernet connection work.
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Jun 3, 2010
Ubuntu Jaunty Server connected via eth0 to a Billion residential ADSL router. I've locked the server MAC address to a specific IP in the router and set the DHCP renewal times to the longest possible times. For a certain number of days, the server will remain connected to the router, but then for some reason (the last time it was after about a month), the server loses it's connect and dumps into syslog the following:
Code:
Jun 2 17:10:15 defiant dhclient: DHCPREQUEST of 192.168.1.105 on eth0 to 192.168.1.254 port 67
Jun 2 17:11:26 defiant dhclient: last message repeated 5 times
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Oct 6, 2010
while my brother was browsing the web on my windows partition he had a blue screen pop up, one of the soft/hardware error ones, not a true BSOD, anyways, ever since my lan port on the computer seems to not be activiating as no wired connection is recognized. The lan port/card is directly attached to the Mother Board, it's a gigabyte motherboard in a self-build computer. I'm just wondering if there's anything I can do to troubleshoot this and see if it is truly a hardware problem or if its something else.
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Dec 5, 2010
I have just installed ubuntu 10.04 using the wubi installer to dual-boot my machine. Under ubuntu, I am not able to connect to the internet or my router. Everything works fine under windows. I have tried to find relevant information in the forums, but nothing seems to work for me. I have tried disabling ipv6, setting a static ip, but no go. ifconfig shows no IP, dhclient results in no DHCP offers and pinging my router's IP results in Network is Unreachable.
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Feb 7, 2010
I have a home WiFi network that has been working fine for ages, which currently supports two Windows-based laptops and a WM5 smartphone. They all connect to the WiFi router (Linksys WRT54G) which in turn connects to the ADSL modem (Huawei MT882). The router is configured with a WEP key, the SSID is not being broadcast, and all MAC addresses must be whitelisted. I try to follow good wireless network security practice. I also have NAT running between the router and the modem.
Everything is working fine for the Windows clients, and now I am trying to add my Linux box to the mix. I am setting up an older HP Pavilion 510a desktop with Ubuntu v8.04LTS, using a Realtek RTL8185 WLAN card. The machine has an onboard RTL8139 LAN adaptor also, which works fine when I plug it in directly to an ethernet port on the wireless router. The WLAN, however, does not seem to be getting a DHCP packet, and keeps on autoconfiguring with a 169.254.x.x address. When I try giving it a static IP address it doesn't connect either.
As you can see from the screenshots below, the WLAN is working fine. I have it installed using the ndiswrapper and Windows drivers. I've been through the Comprehensive ndiswrapper troubleshooting guide but that did not resolve my problem.
I configured the network myself, and it works perfectly for my Windows machines. It is just my lack of experience with Linux which is preventing me from getting the wireless to work under Linux. I can get a HDCP packet in Linux when I am connected to the LAN using the RTL8139 adaptor, but not on the WLAN using the RTL8185 adaptor.
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Jan 26, 2011
Is there any way to get an async notification (perhaps through something like a Linux message queue or Unix socket) when a DHCP client is either unable to renew its lease, or the address obtained changes from the previous value? I've got the ISC client and will dig into it to determine if it supports such a feature, but thought I'd ask here in parallel. (I'm trying to find out if there are any DHCP clients out there which already support this capability.)
If you're curious: We have an application where we're doing auto-registration of an IP camera to an external server. If the camera's dynamically assigned address changes, we need to restart the auto-reg state machine. I've seen implementations where a socket is opened and a SIOCGIFADDR ioctl used to fetch the IP addr, but I'd sure like to avoid polling like this if possible.
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Apr 23, 2010
We have 20+ Redhat servers on our network and every so often our DHCP server goes down. When it comes back up we have to go around to all of our RedHat servers and restart networking manually. Other OS's (Ubuntu, Windows, etc..) will continually try to get a DHCP lease so that when our DHCP does come back up it requires no work from us for them to get back on the network. But it seems that Redhat only tries once and if it fails it never tries again. Have to go around to 20 different servers (some of them are at remote locations) is less then ideal when this happens. how we can get Redhat to continually try to get a DHCP lease like other OS's?
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Mar 3, 2011
The system I am working on is a xdsl board running Linux kernel 2.6 and receiving dhcp address from a Microsoft XP PC. when looking through the dhclient.leases file I can see there's something wrong with renew time and stuff.strange calculation. as far as you know is this normal? You may find below the dhclient.lease file.
lease {
interface "tap0";
fixed-address 10.0.1.16;
filename "***";
medium "-link0 -link1 -link2";
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Jun 22, 2011
I got a strange issue here: We are using ISC DHCP v4 which is default in Open SuSE 11.4. These two options 'default-lease-time' and 'max-lease-time' are set in all subnets, with values between 43200 (12 hours) to 518400 (144 hours). See partial dhcpd.conf below please.Now the lease time from Windows client's ipconfig output is only 10 minutes. Why? (dhcpd on servers restarted many times. ipconfig /release, ipconfig /renew on client run many times)
Code:
lease-file-name "/etc/dhcpd.leases";
default-lease-time 43200; # 12 hours
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Feb 8, 2010
first: PXE flawless bind to dhcp address but put next binding state to free second: when installer calls init script to reinit ethernet driver (e1000 (vmware)) binding fails 11.2 opensuse fail to reinit dhcp with log entry "no free leases" third: when manual set network install works how to preserve dhcp lease on reinit of driver?
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Oct 27, 2010
I want my netbook to connect automatically to both the office wired/static network and to the usual wired/DHCP networks.
wicd is wicked but netsearching hasn't revealed how to configure it for both wired/static and wired/DHCP except by manually switching profiles.
wicd's profiles can use pre/post(dis)connect scripts but I don't know how to integrate them into wicd when they are upping/downing connections on cable (un)plugging.
If it is not practical to solve this within wicd, I'll explore standalone scripts to configure eth0 on cable (un)plugging, as detected by ifplugd.
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May 2, 2015
I'm using a wired ethernet dongle due to my machine not having an ethernet port, however it sometimes drop connection, how can I diagnose whether if the dongle is faulty or my system is having trouble maintaining a connection.
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May 9, 2011
I would like to be able to schedule a limit for an IP connection for my kid's computers/iPods. Since I know the MAC addresses of their various hardware items, is there a way to shut down their connectivity at a particular time via the DHCP server or perhaps a firewall rule?
Running Ubuntu 10.04 and Shorewall is being used for the firewall.
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Mar 28, 2010
Looking at var/log/messages below, it looks like I'm not being offered a lease on this particular network. I can successfully connect to the network because iwconfig wlan0 reveals my network ssid and the access point I'm connected to. But pinging google.com gives me nothing..
Code:
root@darkstar:/# tail -f var/log/messages | grep dhcpcd
Mar 28 15:45:42 darkstar dhcpcd[5329]: wlan0: adding IP address 169.254.76.182/16
Mar 28 15:46:13 darkstar dhcpcd[5329]: wlan0: adding IP address 169.254.76.182/16
Mar 28 15:46:44 darkstar dhcpcd[5329]: wlan0: adding IP address 169.254.76.182/16
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Jan 16, 2011
I just want to use Internet Connection Sharing (ICS) to connect to the internet. I have done a massive amount of troubleshooting, but some of it seems to contradict itself, and the only two things that I know for sure are that it used to work, and that my Ethernet cable is not the problem. When I use Terminal utilities like ifup and dhclient it seems that it can not determine IP information, but when I try to put it in manually, the "Apply" button grays out right after I finish typing it in. When I try to connect normally, in KDE or GNOME, the icon acts like it's connecting, then instead of having the connected icon, I receive a notification that "the network has been disconnected", and it goes back to the disconnected icon.
Oh, and by the way, I know that I could probably find a workaround, but I have limited resources, and this used to work. The Linux is a Dell desktop with Fedora 12 and the Windows is a Windows 7 HP laptop.EDIT: I hope that I didn't mess something up, but I accidentally used system-network-config to try putting in the IP address there, and ended up changing it back to the original settings, but the computer is now calling it Auto Ethernet in the taskbar icon, although sudo iwconfig in the terminal still calls it eth0.
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Dec 4, 2010
Just installed Fedora 14 from the Live CD i686 on my Dell Inspiron 1521. I can't connect to the SpeedTouch 585 on either wireless broadcom card or the wired Ethernet card.
I can connect to it from the same Laptop on the Vista which is on dual boot on the same laptop.
Further confusing is that I ran Fedora 14 and connected to another SpeedTouch today.
Already checked the Channel on the wireless nic and it's on the same one as the SpeedTouch.
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Feb 17, 2009
I've installed F10 on my laptop since few days and I'm facing an annoying networking issue: the network connection seems to work well when, suddently, it goes down for a while, and then come back.This happens with both wired and wireless (Intel PRO/ Wireless 3945ABG) connection.
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Oct 30, 2010
So basically, complete linux noob here, dual-booted fedora 13 with windows 7, and fedora can't seem to detect either my wired or wireless, however i don't really care about the wired. After spending a few hours browsing forums and tutorials and the like, seems as if it is a driver issue, as in there is none. I have managed to find the files :
HTML Code:
broadcom-wl-5.60.48.36-1.fc13.noarch.rpm
kmod-wl-5.60.48.36-1.fc13.5.x86_64.rpm
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Dec 2, 2010
my wireless network connection is not working but wired connection is working .at networkmanager wireless connections are not showing .
[walkingtree@localhost ~]$ iwconfig lo no wireless extensions.
eth0 no wireless extensions.
wmaster0 no wireless extensions.
wlan0 IEEE 802.11bg ESSID:""
Mode:Managed Frequency:2.422 GHz Access Point: Not-Associated
Tx-Power=20 dBm
Retry min limit:7 RTS thrff Fragment thr=2352 B
[Code]....
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May 31, 2011
i m connected it with wired bb airtel connection but its not working i have one more operating system windows 7 thats working nicely with that connection.
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