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dbuckley
Joined: 23 Mar 2004
Posts: 12
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| Posted: Tue Mar 23, 2004 5:23 pm Post subject: Dummy IP Interface |
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I'm need to set up a dummy IP interface on a Debian LiNode, and am failing at step one. I think I know what to do once I get past step one, but till I solve this, I'm stuck.
When I do:
# ifconfig dummy
dummy: error fetching interface information: Device not found
Same with dummy0
I think I need to do an insmod dummy, but when I try:
# insmod dummy
insmod: dummy: no module by that name found
And then I'm at the end of my linux knowledge. There doesnt appear to be a file like *dummy* in the filesystem. Where / how do I get this driver thing, and where do I put it? Is there a more permanent way of telling the kernel to load the driver on boot, or do I just stick the insmod command in the network startup?
Thanks. |
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caker
Joined: 15 Apr 2003
Posts: 2392
Location: Galloway, NJ
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| Posted: Tue Mar 23, 2004 6:01 pm Post subject: |
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You could use tuntap, which is compiled into the UML kernels:
Code: # install uml-utilities, which has the "tunctl" admin app:
apt-get install uml-utilities
# make the dev node, and make it world read/write-able, for non-root users (adjust to suit)
mkdir /dev/net/
mknod /dev/net/tun c 10 200
chmod 666 /dev/net/tun
Example usage:
Code:
li-20:~# tunctl --help
tunctl: invalid option -- -
Create: tunctl [-u owner] [-t device-name] [-f tun-clone-device]
Delete: tunctl -d device-name [-f tun-clone-device]
li-20:~# tunctl -u caker -t caker0
Set 'caker0' persistent and owned by uid 1000
li-20:~# ifconfig caker0 192.168.1.2
li-20:~# ifconfig caker0
caker0 Link encap:Ethernet HWaddr 00:FF:C9:2A:40:FC
inet addr:192.168.1.2 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::2ff:c9ff:fe2a:40fc/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:3 overruns:0 carrier:0
collisions:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
li-20:~#
-Chris |
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dbuckley
Joined: 23 Mar 2004
Posts: 12
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| Posted: Tue Mar 23, 2004 6:13 pm Post subject: |
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Giving it a go now.
How much of this stuff is persistent?
(this does look like strange voodoo...) |
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caker
Joined: 15 Apr 2003
Posts: 2392
Location: Galloway, NJ
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| Posted: Tue Mar 23, 2004 7:33 pm Post subject: |
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dbuckley wrote: How much of this stuff is persistent?
You will want to edit your init scripts to create and ifconfig the tap device on startup. The other stuff is run-once...
-Chris |
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