Networking :: Bind The Devices To Specific Rfcomm Interfaces Via Udev?
May 8, 2010
# rfcomm -a
rfcomm0: 00:1A:89:09:8C:77 channel 1 clean
rfcomm1: 00:07:E0:2E:99:43 channel 3 clean
Then I connect by the mobile, and:
# rfcomm -a
rfcomm0: 00:1A:89:09:8C:77 channel 1 clean
rfcomm1: 00:07:E0:2E:99:43 channel 3 clean
rfcomm2: 00:1BC:0F:5C:AB -> 00:07:E0:2E:99:43 channel 1 connected [reuse-dlc release-on-hup tty-attached]
What the heck is that rfcomm2, when that mobile is bound to rfcomm1? Is it udev that makes fun of me? If so, how to bind the devices to specific rfcomm interfaces via udev?
[Code]...
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Jan 7, 2011
I have got a problem in the configuration of the network for my Linux box. The distribution is Slackware 12.2 with the 2.6.27.7-smp kernel. There are three ethernet NIC, one on the motherboard with Atheros AR8121/AR8113 chip and two on PCI card which with RealTek 8169.
I installed the module for Atheros which is the atl1e.ko and I defined the configuration for the three NICs in /etc/rc.d/rc.inet1.conf.
When I hit the commend ifconfig I see all the three interfaces eth0, eth1, and eth2, but the address are not distributed between the NICs as I'd like so I thought to resolve the inconvience with udev, but I don't know how to proceed because there is a strange situation.
If I control the file /etc/udev/rules.d/70-persistent-net.rules I see a strange situation: Once the file contains nonly a line for the Atheros NIC but if I reboot the system there are the two lines for the two RealTek NICs and everytime the system is rebooted there is a change between these two alternatives. A detail I noted is that the two modules atl1e and r8169 are both always loaded, so udev has always the chance to detect the hardware but for some reason that I don't know something goes wrong. Another related problem that bothers me is the absence of udevinfo and udevtest. Have I perhaps to reinstall udev?
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Jun 3, 2010
I'm trying to set my network interfaces so that they don't get random every boot.(eg assign eth0 to a network interface with a given MAC addr, and eth1 to the other one)I trew in a udev rule (in fact just modified the rules that was automatically generated and set the ethX in it) but the system ignores my udev rule.What am I missing ?Here is all the info :
Code:
$cat /etc/udev/rules.d/70-persistent-net.rules
# This file maintains persistent names for network interfaces.
[code]....
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Oct 15, 2010
I've got a 10.04 machine with two ethernet interfaces. I have two separate outside internet connections. This machine is connected to both interfaces. But it DOES NOT route between them. It's just a host on both subnets. Again, no routing is to go through this host. I'd like to force traffic originating on each ethernet port out to that network's internet connection.
Here's the desired setup:
eth0 192.168.12.37/24 gw 192.168.12.1
eth1 192.168.1.37/24 gw 192.168.1.1
I'd like traffic on the 192.168.1.37 address to go out through the 192.168.1.1 gateway. I have a program bound to that address and need it's traffic to go out ONLY through the 192.168.1.1 gateway. Any other traffic on the machine should go out the 192.168.12.1 gateway.
The logic is: source IP is 192.168.1.37, dest IP is any then go out only through 192.168.1.1 source IP is 192.168.12.37, dest IP is any then go out through 192.168.12.1 first or 192.168.1.1 next. The point is source on the .1.37 address must always go out the .1.1 gateway and NEVER through .12.1. Whereas traffic on the .12.37 address should try going out the .12.1 gateway first but can go out the .1.1 gateway if the .12.1 connection is down. I could live with this failover option. I could accept that traffic on the .12.37 address was likewise limited to its own gateway.
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Apr 10, 2011
Now that IPv6 is becoming more and more common, I found the need to disable IPv6 on some interfaces but have it enabled on other. I found that /proc/sys/net/ipv6/conf/*/disable_ipv6 does exactly that. I am now wondering if anybody knows, why are networking scripts so counterintuitive. /etc/sysconfig/network has an option:
NETWORKING_IPV6=yes
All this option does is disable some ipv6 services (dhcpv6...), it does not disable IPv6 in whole (as one would assume...that's why you had to disable it with module parameters). Searching for more IP6 related config option, one can find that /etc/sysconfig/network-scripts/ifcfg-* scripts can contain:
IPV6INIT=yes
Again, this option does not disable IPv6 protocol on the interface, it just skips running ifup-ipv6/ifdown-ipv6 scripts. I added a /sbin/ifup-pre-local. Now, this script runs before ethX entries are created (other scripts run when it's already too late) in /proc directory, so it modifies default values which are then used after those entries are created:
#!/bin/bash
#
[ -f "/etc/sysconfig/network-scripts/$1" ] && . /etc/sysconfig/network-scripts/$1
[code]...
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Mar 24, 2010
I currently have two internet interfaces installed, one is ethernet (eth0) and the second is wireless (wlan0). Many command line applications allow you to specify which interface should be used, but many gui apps don't provide this option or at least I haven't found it. I have some questions:
1. How would I tell Firefox to use only my wlan0 interface? If it's possible in Firefox, is this also possible with Google Chrome?
2. If a program doesn't provide a command line argument to support this, is there a standalone application that could help manage preferences for multiple applications?
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Jan 12, 2010
I have two identical hard drives; same make, same manufacturer, same model, and same capacity, which I'm trying to run in a RAID1 mirroring scheme. The problem: configuration files for md arrays only lets me use device names, such as /dev/sdb and /dev/sdc. To keep these the same (and in the same order) when I boot I wanted to write a udev rule for them. Unfortunately, I have no way to differentiate between these two drives, as they seem to be identical. Normal methods of differentiating by size or model name wont work. I think I can use UUIDs; but I neither know how to get the UUID of a device/partition, nor do I know how to use it (if it is possible) in a udev rule.
Solution:
run
udevadm info --query=all --path=/sys/block/sdb # or whatever block dev
Look for and use "ID_SERIAL_SHORT" which is unique even for identically manufactured disks. Write a udev rule based on this property.
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Oct 5, 2010
My co-workers and I are trying to develop a USB device, which uses an FTDI chip as a USB-serial controller. The thing is, we would ideally like to set a custom idVendor and idProduct on the FTDI chip. The problem occurs that when we set custom idVendor and idProduct values, udev(7) loads the "usb" driver. If we leave the idVendor and idProduct values to their originals, udev(7) loads the "ftdi_sio" driver. The whole reason for the custom idVendor and idProduct values is so that I can (hopefully) write a udev(7) rule to map that particular device to a specific entry in /dev. Is there a way to write a udev(7) rule so that you can forcefully load a particular driver for a device? Is there something else that could be done to get a similar result?
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Jan 7, 2010
I have a weird issue that I have not seen on any forum. My jaunty on DELL studio laptop seems connected to net, but I can not access any network service (ssh, firefox etc.). But when I connect a cable the cable lights blink as it should be and in wireless connection my wifi light blinks.
It was working 2 days ago without problem, and I have not done big changes recently.I removed and reinstalled network-manager and network-manager-gnome. Nothing changed. I see a message in each restart as follows (when Openafs is starting). I can reproduce it with "/etc/init.d/openafs-client restart"
Code:
ADVISEADDR:error in specifying interfaces: no existing ip interfaces found
#lspci
Code:
04:00.0 Network controller: Intel Corporation Wireless WiFi Link 5100
08:00.0 Ethernet controller: Broadcom Corporation NetLink BCM5784M Gigabit Ethernet PCIe (rev 10)
#lshw -c network
[code].....
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Jan 25, 2010
I have 3 Interfaces for a different LAN's and when I start one interface the another interfaces goes down.How can it's possible?I configure my ethernets as:
Code:
/sbin/ifconfig eth0 172.16.3.108 netmask 255.255.0.0 broadcast 172.0.255.255
/sbin/ifconfig eth1 172.16.3.109 netmask 255.255.0.0 broadcast 172.0.255.255
/sbin/ifconfig eth2 172.16.3.1110 netmask 255.255.0.0 broadcast 172.0.255.255
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Apr 19, 2011
I have a trayless SATA hotswap bay that is really terrific for quickly attaching and removing SATA hard drives. I'm trying to write a udev rule to create a symbolic link to the device node for the drive that is attached through the hotswap bay (/dev/bay -> /dev/sdX). This eliminates any ambiguity when performing destructive tasks (fdisk, etc). I'm running squeeze amd64. I've read through several tutorials and have it working somewhat. Here's the output of udevadm info for a drive attached via the hotswap bay.
looking at device '/devices/pci0000:00/0000:00:11.0/host7/target7:0:0/7:0:0:0/block/sdb':
KERNEL=="sdb"
SUBSYSTEM=="block"
DRIVER==""
ATTR{range}=="16"
ATTR{ext_range}=="256"
ATTR{removable}=="0"
ATTR{ro}=="0"
ATTR{size}=="156301488"
ATTR{alignment_offset}=="0"
ATTR{capability}=="52" ....
Here is my udev rule
DEVPATH=="/devices/pci0000:00/0000:00:11.0/host7/*", SUBSYSTEM=="block", SYMLINK+="bay%n"
This produces the desired behavior and gives me an fdisk-able device node. The problem I am having is that the "host" component of the DEVPATH varies from bootup to bootup. I'm just using on onboard SATA, host2-7, specifically host7. There is also onboard PATA, host0-1. It seems to just be random which "host"s are assigned to which controller. For example, the next time I boot the system, the onboard SATA will be host0-5 and the onboard PATA will be host6-7. In this simple case, I could just write 2 rules, one for each possibility and it would still be correct because of the different PCI addresses of the two controllers. But on systems with more SCSI (uh... libata, actually) controllers, a "host" file can point to different physical ports between bootstraps. This would be bad. Does anyone know of a way to write a rule to tie a device node to a specific physical SATA port on the motherboard/hba?
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Apr 16, 2010
If I try to add a new interface (eth1) to /etc/network/interfaces, I get
Code:
* Reconfiguring network interfaces... SIOCSIFADDR: No such device
eth1: ERROR while getting interface flags: No such device
SIOCSIFNETMASK: No such device
[Code]...
How do I add 2 interfaces and get anyone of them to work, as available ?
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Aug 5, 2011
I have vps box with debian. I have two ip addresses, but first (default) is currently unavailable. In that case there is many problem. Fortunately wget has --bind-address option so I can download. My question is how can i configure apt-get, aptitude to use specific address?
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Nov 28, 2010
I have the following in my httpd.conf file
Code:
# Listen: Allows you to bind Apache to specific IP addresses and/or
# ports, instead of the default. See also the <VirtualHost>
# directive. Change this to Listen on specific IP addresses as shown below to
# prevent Apache from glomming onto all bound IP addresses.
#Listen 12.34.56.78:80 Listen 80
And when I try to start the server, I get the following
Code:
(98)Address already in use: make_sock: could not bind to address 0.0.0.0:80. I did have an Apache web server up and running about 6 or 7 years ago - but seem to have lost everything
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Sep 3, 2009
I am configuring bind9 on fedora 9(sulphur).I have configured /etc/named.conf and created zone file in /var/named/I have started the service but when I am executing the command nslookup mydomain.com it is not able to resolve the name.Another problem I am facing when I do telnet localhost 53,I am able to connect.but when I do telnet myip 53 it does not connect.Seems to be a firewall problem but I ve disabled iptables selinux completely even I ve disabled dnsmasq but still not working.
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Sep 26, 2010
I am trying to create a socket to listen for a bootp response so I am using a PF_PACKET socket so that I get the response based on my mac. My problem is that I don't want to hear all traffic (as I do now) so would like to use a specific port number and bind to it.
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Dec 25, 2010
I am going to use "pthread_setaffinity_np" to bind a thread to a specific core. My application has two threads. I have used mutex to assign a specific id to each thread and then bind that thread to a core different from another core. but it seems that the os assigns both thread to one core.What should I do to bind each thread to a specific core?
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Jul 6, 2010
System Details:
Code:
Things I have tried so far:Followed tutorials found here at [url] and [url] None of which worked.
Some output from what appears to be a valid connection:
I have run sdptool browse and found my device
I have used hcitool scan and found my device
I have done a cat of /dev/rfcomm0 and seen data streaming
I have seen a process id for gpsd as well as seen a listneing port for gpsd
I have been unable to get either gpsdrive / xgps / tangogps to see gpsd. All report it as not running.
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Mar 11, 2010
First, excuse me for my bad english I want to connect a bluetooth device with the command rfcomm. In a terminal, I put the command :
Code:
rfcomm connect 0 00:80:98:E4:07:53
And the system answers :
Code:
Connected /dev/rfcomm0 to 00:80:98:E4:07:53 on channel 1
Press CTRL-C for hangup
On fedora 10, or 11, I can use this command with all users. On fedora 12, only the root user can connect and use this device. Other users have the message :
Code:
Can't open RFCOMM device: Permission denied What can I do to resolve this problem?
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May 18, 2010
I'm writing a phone app for Android that connects to a bluetooth RFCOMM device in my car. My phone app talks AT commands with it. For development work, I often need to communicate with the device to try different commands and things.
My neighbors are starting to think I'm weird because I sit in my car for hours on end with my laptop screen shining on my face, typing away like a script kiddie.
I'd much rather configure one of my many Linux servers to act as a bluetooth RFCOMM device and allow me to connect to it (indoors, while I sit on my couch).
I imagine I have to start with something like
sdptool add SP
But then what?
I'm perfectly happy writing a perl app to handle the I/O, but I just don't know how to make the bluez stack accept connections and subsequently pipe that stream to a perl app.
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Oct 10, 2010
I'm trying to use my nokia n79 as internet modem for my laptop which has mandriva 2010 spring (free) installed. When i connect phone and computer with usb cable i can see my phone listed under 'gprs modem' but when i click 'connect' it says 'please wait' for a while then nothing happens.
I've tried using bluetooth and rfcomm to connect but the devices do not pair. Even l2ping isn't able to communicate with my phone.
When i use rfcomm with the connect command a dialog pops up on my phone requesting pin and i enter the one in my /etc/bluetooth/pin but then nothing happens and rfcomm exits saying connection refused.
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Jul 2, 2010
I'm on an embedded system that doesn't have Gnome, and I'm trying to startup networking automatically using /etc/network/interfaces. Here's what I have.
[Code]....
eth0 comes up just fine. wlan0 comes up, but it's unable to acquire a DHCP address. I added the following lines to /etc/rc.local, and wlan0 comes up all the way, but I'm not too crazy about this hack.
[Code]....
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Jul 8, 2011
what is bind vs bind-chroot vs caching-nameserver ?what is the different between eatch others ?
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May 6, 2011
I'm testing some network setups, and bought two dirt-cheap USB network interfaces. My plan was to attach these two to an embedded device (sheevaplug) and mess with firewall setups. However, the two interfaces are absolutely identical; they have the same MAC, and lsusb -v is the same for both, line by line (except for device number, which tells the order the devices are plugged in, I believe?). Also, this is a single usb bus (single port, with a hub).
Now, obviously I can't make much of a firewall setup if I can't tell the interfaces apart. I realize I probably hit a brick wall, but does anyone have thoughts on this?
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Jan 6, 2011
For some reason, Ubuntu keeps assigning my network interface wrong MAC address. This happens only after fresh boot (I have dual boot with WinXP, if I start Windows first and then restart to Ubuntu without switching computer off, the MAC is correct). Contents of /etc/udev/rules.d/70-persistent-net.rules:
Code:
# PCI device 0x10ec:0x8136 (r8169)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:22:19:ef:1c:3d", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
# PCI device 0x168c:0x001c (ath5k_pci)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:17:c4:78:f4:f8", ATTR{type}=="1", KERNEL=="wlan*", NAME="wlan0"
[code]....
EDIT: I made a workaround by adding
Code:
auto eth0
iface eth0 inet dhcp
hwaddress ether 00:f3:f5:ef:fe:56
to /etc/network/interfaces and it works. However, I'd still like to know why Ubuntu ignores my udev rules, regardless whether the workaround happens to work or not...
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Feb 16, 2009
I'm trying to arrange my 4 NIC's on CentOS 5. Two of them are build-in motherboard nic's and the others are PCI-E Dual Intel card. I'm wondering if someone succeed with udev renaming rule based on BUS location like ID=="0000:03:00.0" ... etc
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Oct 16, 2010
I have two interfaces, gprs0 and gprs1, both connected to the Internet from the same HW device, but through two different access points I just read another blog entry with a guy who had two network cards, using one as a back up - I guess this is a little similar, but should be much easier I am guessing - I am just lost Using ifconfig (IP address given by the network) and route to setup the connection,
ifconfig gprs0 10.20.30.40 up
route add default dev gprs0
ping 66.102.7.99 works fine
afterwards
[code]....
There is data being transmitted and received to device again, I guess the kernel just doesn't know where the incoming data should go without the correct routing tables? Or what exactly is going on?The question I have is how do I configure the device to do the correct routing, using only the ifconfig and route commands? Maybe too trivial for you guys, but I am getting tired of goofing around not knowing what is up and down anymore
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Jul 28, 2011
I installed the latest release of Kubuntu on to my dell laptop about 3 days ago, I fell asleep last night and woke up to my laptop not being connected to my wireless(it was when I fell asleep, it didnt reboot or anything overnight an dno one touched it), so I plugged in an ethernet cable and it still did not detect an internet connection, then finally it connected through my phones mobile internet via Usb.
However none of the built in networking devices are working, I have them all enabled.My WLAN Interface says "Unmanaged" and Networking interface complains the cable is unplugged even when it is not.I know you guys will need some additional info from me to help me.I just used my mobile broadband to install Wicd network manager but thats just a temporary fix, as it doesnt fix my ethernet issue and I want to be able to use the network manager itself to manage my networks.
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Dec 23, 2009
I'm trying to disable TCP Segmentation offloading across the board in our datacenter to improve performance. Reading the history in the CentOS Bugzilla and the upstream's Bugzilla, they recommend doing this within the udev rules. See:[URL].. So, I created a new udev rules file that looks like this, as filename /etc/udev/rules.d/50-eth_tso.rules:
ACTION=="add", SUBSYSTEM=="net", NAME=="eth0", RUN+="/sbin/ethtool -K eth0 tso off"
ACTION=="add", SUBSYSTEM=="net", NAME=="eth1", RUN+="/sbin/ethtool -K eth1 tso off"
[Code]...
Can anyone out there figure out just what I'm doing wrong - I've been struggling with this for about 2 hours trying to make it work, and simply can not figure it out - and would like to not resort to hacking the problem and adding the ethtool commands to /etc/rc.d/rc.local!
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Jun 24, 2011
I'm using Debian Squeeze with backports turned on and I've installed connman and it cannot see my wireless networking interface. I know my wireless card has a working driver because I have WICD on the same system and it connects just fine.I am using the Enlightenment desktop though and it only integrates with the connman wireless manager - so I would prefer to use this instead of WICD. Anyone have any ideas on how I can get connman working? What extra configuration needs to be done after installing?
I added my user to have the same permissions as root to the /etc/dbus-1/system.d/connman.conf file and I added my tiwlan0 to /etc/network/interfaces as a DHCP connection with no changes in functionality :-/. Been searching around online and reading man pages for the last couple days with no good results. Any input would be awesome!
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