Networking :: Second Network Interface Doesn't Work?
Jul 3, 2010
I have two simultaneous active mobile connections through my two mobile phones and USB data cables. Yet I can only send/receive with one connection.Each of the phone modems have a node in /dev, namely ttyACM0 and ttyACM0. So the modems are detected correctly.After setting up two dial-up connections with the two modems I have two ip's. Ifconfig-a confirms this:
ppp0 Link encap:Point-to-Point Protocol
inet addr:10.10.219.60 P-t-P:10.6.6.6 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1
I have two simultaneous active mobile connections through my two mobile phones and USB data cables. Yet I can only send/receive with one connection.
Each of the phone modems have a node in /dev, namely ttyACM0 and ttyACM0. So the modems are detected correctly. After setting up two dial-up connections with the two modems I have two ip's. Ifconfig-a confirms this:
Network manager doesn't recognize nas0 interface and i have problems with using Gwibber, Evolution mail,Empathy, etc Is there any way to add nas0 in Network manager?? I know the solution to remove Network manager, but i need Network manager because i'm often using wireless (as second internet connection).
I'm configuring an HP Mini 110 (wireless BCM4313) to use it as a small Access Point (ad-hoc mode).
I want to make my configuration reboot friendly. With what I have right now, as soon as I reboot the laptop, the wireless interface configuration isn't correctly setup. I have to do "ifdown eth1; ifup eth1" manually.
Here is what I have in /etc/network/interfaces for the wireless interface code...
So the question is how can I avoid having to bring down and up the interface?
i've installed it on my parents old computer, mostly for downloading. But wired internet did work all the time but then i had to reset our router because of some problems and now it doesn't work anymore! But the strange thing is, if i put the cable on my own laptop with windows on it, then it works as normal.
So i guess its some kind of DNS problem, but i'm very new with ubuntu and also not so good with computers. Our network is simple just an modem connected to an router: Sitecome WL-341.
what is the command to restart the network services? ive forgotten i think it uses -hup switch though. about 1 in 20 boots on my desktop ubuntu system results in the system insisting its no longer on a network yet has a fully functioning network card. a reboot always fixes the issue but that doesnt seem like a long term solution to me. If I ping a neighbouring system I get nothing. (sent packet count increases in ifconfig) If I ping from a neighbouring system back to my desktop I get nothing (no change in packet count) I can bring down and back up the network interface with no results. A sniffer shows the system definitely isnt sending anything out Everything worked previous boot and will work again after a reboot.
I installed Ubuntu on a machine after erasing everything else and the wireless has never worked. It says that the wireless has already shut down even though it recognizes the wireless network and my other non-linux machines see the network and work fine.
My desktop PC has 2 NICs. I have Ubuntu on it since several years, and I remember that both eth0 and eth1 used to work. However, I discovered recently that currently only eth0 works, and eth1 is dead, but I don't know why. It's been a while since I've tried eth1, so I have no idea when exactly it broke. I suspect the problem may be related to the fact that the MAC address is incorrect: it is set to 00:00:00:00:00:00, which seems wrong. But I have no idea how this happened...Any idea what might be wrong and how I can fix it? Here is some output which I think is useful:
Code: peter@cheetah:~$ ifconfig -a eth0 Link encap:Ethernet HWaddr 00:18:f3:68:42:78
I'm trying to activate a wireless network on an ubuntu server 10.04. The machine has a TPLink PCI wireless card. Card is well recognized, and scanning for wireless connection it finds correctly the essid of the access point in the room. But when I try:
Code: $ sudo iwconfig wlan0 essid "apoint" key s:my_key_8 this error is returned: Code: Error for wireless request "Set Encode" (8B2A) :
SET failed on device wlan0 ; Invalid argument.I looked for similar situations over many forums, and I found that it could be the card doesn't support the encryption type (My AP uses WPA with TKIP). However if I use an ubuntu desktop live CD on the same machine, I can connect witouth any problem with NetworkManager 0.8.
For about the past month I have been having a very frustrating problem When I boot the system with the ethernet cable attached it acts as if the cable is unplugged even though the connection light is litWhen I boot the system with the ethernet cable disconnected and wait until it boots all the way to gnome and then plug in the cable everything works fine
I have a pppoe adsl connection. When I disconnect and try to reconnect, network-manager keeps asking for my password. I type it again and again with no success. When I reboot, it works again. On ubuntu, I use pppoeconf and it works well. So on Fedora I made a connection with pppoe-setup but neither ifup nor Code:
pppoe-connect commands work. When I type Code: pppoe-connect , it says Code: /usr/sbin/adsl-start: line 217: 13409 Terminated $CONNECT "$@" > /dev/null 2>&1 . When I type
Ifup ppp0 doesn't work either. However, with exactly the same settings, ubuntu connects to the internet.
I added a repo from launchpad to install latest Network Manager and then installed it (version 0.8). Then I decided to rollback to Karmic's version (since 0.8 doesn't work) but failed: I removed the repo from sources.list
Then apt-get udpate Then apt-get clean Then apt-get install network-manager...
But still 0.8 version is downloaded and installed! How can I restore Karmic's version?
I have an Aspire 7741z running Ubuntu 10.04 I just loaded the 32 bit version today, then did the Update manager (398 updates) Before the update everything worked fine. After the update, no wireless. Password & security is correct, all wireless setup is correct. Aside from my network, I do have access to a local hotel (next door) and I can always get into their unsecured guest network, that doesn't work either.
I believe it is the driver since I have loaded Ubintu 10.10 32 bit with the same reaction. It will connect when I put in the live disk, but not from the hard install. output from lspci
I'm having mysterious wired network problem with my Karmic/9.10 machine. It hasn't been in network a while, but now I finally got the cabling done. I can't get the IP from dhcp server (TW-EA510), and static settings doesn't work either. Fresh cabling showed OK 1Gb connection on tester, and win7 laptop works fine. I even tried with long cable though the rooms, but it doesn't help, so it definately isn't the new cabling.
Log from the router after issuing #"dhclient": Feb 16 23:01:43 DHCP SERVER: DHCPDISCOVER from 00:01:29:fb:c5:d1 via br0 Feb 16 23:01:43 DHCP SERVER: DHCP offer to 00:01:29:fb:c5:d1 Feb 16 23:01:49 DHCP SERVER: DHCP request from 00:1b:ea:c8:a0:ba Feb 16 23:01:49 DHCP SERVER: DHCP ack to 00:1b:ea:c8:a0:ba Feb 16 23:01:54 DHCP SERVER: DHCPDISCOVER from 00:01:29:fb:c5:d1 via br0 Feb 16 23:01:54 DHCP SERVER: DHCP offer to 00:01:29:fb:c5:d1 Feb 16 23:02:03 DHCP SERVER: DHCPDISCOVER from 00:01:29:fb:c5:d1 via br0 [Code]....
Motherboard is some old Lanparty with two ethernet ports, NVidia CK804 and Marvell 88E800 rev 13 Gigabit netwok adapters, neither of them works. At least another of them has been worked earlier when I last got it wired. It's been a while, so I'm not sure which one of them and with different router if that matters.
I have problems with my USB driver. After adding my device (MSP430 USB-DEBUG-INTERFACE) it doesn't work.
[ 60.476039] usb 2-2.1: new full speed USB device using uhci_hcd and address 8 [ 60.693959] ti_usb_3410_5052 2-2.1:1.0: TI USB 3410 1 port adapter converter detected [ 60.693981] ti_usb_3410_5052: probe of 2-2.1:1.0 failed with error -5
I try to do: modprobe ti_usb_3410_5052.No changes.It's Linux
Linux ubuntu 2.6.35-25-generic #44-Ubuntu SMP Fri Jan 21 17:40:44 UTC 2011 x86_64 GNU/Linux
I have a laptop running 11.2 with an internal Broadcom-based Wi-Fi card that's working fine. I'm trying to get 802.11n going with the WUSB600N. The USB ID on this device is 1737:0079. I believe this means it's a "V2" with an RT3572 chip.
No driver loads for this device when it's plugged in. If I do a "modprobe rt2870sta", a driver loads, and syslog shows "rtusb init" and "usbcore: registered new interface driver rt2870". But ifconfig -a doesn't show a new network interface. I've also tried building the RT3572 driver from the manufacturer's web site. It builds fine, and modprobe will load it, but I get the same results as the rt2870sta driver.
I am totally new to Linux and have just installed ubuntu 10.10. After configuring the network interface via dhcp I started getting these messages that come in so frequently I can't configure anything else.
Why I am getting this messages and more importantly how do I get rid of them.
today I tried to configure a network route to a host for testing my network interface. Code: route add 192.168.1.15 eth0 As I have to eth interfaces and both interface got their IP from DHCP (192.168.1.11 and 192.168.1.12) and are in the same subnet, I shut the other interface down:
Code: ifconfig eth1 down Then I tried to test the interface by doing a ping to 192.168.1.15. Problem: When I unplug the cable from eth0 (and eth1 is still plugged) the ping still works. Somehow my linux (it's debian) powers up again eth0 and pings over this port.
How can I stop my linux doing this. I just want to have the route added only on the one interface - not the other. Is it maybe some case of a default-gateway?
I have a server with 3 interfaces. Only one of them comes up after boot tho (the one with the cable plugged in). When I start dhclient the others show up in ifconfig... Could it be just cause there is no cable plugged in them? Or then how do i bring them up automatically without having to issue dhclient myself after boot?
I have a Belkin Enhanced Wireless USB Network Adapter Model # F6D4050 v2. The drivers are for windows but the windows wireless drivers app doesnt work. I see a tutorial for a linksys that appears to have the same chipset, but I am not sure if any of the steps need to be modified, also my kernel is a bit different. Here is my kernel:
I'm having all sorts of problems connecting an access point to my computer, but here is one piece that I hope will get me going, if I can get it solved.My computer has two network interfaces, eth0 and eth1. eth1 connects to the cable modem and thence the world, and works fine. eth0 is supposed to connect to the access point over a private network. Here is the output from route with my IP address blotted out:
Code: Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface
The adapter I purchased (Zonet ZEW2508 ) uses the Ralink 2070 chipset - a fact that originally excited me because Ralink seems to be fairly loving to the Linux community. However, despite my best efforts I can't get the thing to work. Initially I tried following directions to set up the driver you can download from the Ralink website. The directions I found were written February first, and Ralink updated the driver February eighth - so as far as I can tell the directions no longer work. After screwing around trying to figure that out for a while I decided to give ndiswrapper a go.
Initially this seemed promising. I just harvested the drivers from the CD and followed one of the many ndiswrapper directions available - most helpful seemed initially to be the Ndiswrapper Troubleshooting Guide found in this forum, however the solutions offered there didn't work either. When I throw an ndiswrapper -l into the terminal it looks promising at first, it tells me the driver is installed and the device is present, but it just doesn't work. When I try iwconfig, or iwlist scan it tells me "no wireless extensions," and "interface doesn't support scanning" respectively. The only devices even listed are lo, eth0, and pan0. There's no wlan0 or anything of the sort.
I would like be able to access packets coming off the network with the hopes of coding a primitive packet sniffer for learning purposes. I would also like to be able to piece together my own packets and send them out on my network. Eventually, I would also like to write a simple firewall so I want the capability to drop packets as well as let them pass. I assume I will have to access the kernel with some system calls to do this, any one have any information or resources that could help me on this project?