grml autoconfig and kvm network
Hi,
Whenever I use the '-net user' kvm command-line option, the guest grml will not have the eth0 device.
According to https://help.ubuntu.com/community/KVM/Networking
,----- | By default, if you enable the usermode networking using the '-net | user' command-line option, the guest OS will get an IP address in | the 10.0.2.0/24 address space and the host OS will be reachable | at 10.0.2.2. `-----
However, whenever I use the '-net user' option, there will be no eth0 device. I.e.,
kvm -net user -boot d -cdrom grml-medium_2010.04.iso
This I'll get an eth0 device, and an IP for it.
kvm -net user -boot d -cdrom grml-medium_2010.04.iso
This I won't get the eth0 device. The /etc/network/interfaces file only contains lo device, no eth0.
Is it my kvm problem or grml autoconfig's?
FYI, my kvm is just the vanilla one:
$ apt-cache policy qemu-kvm qemu-kvm: Installed: 0.12.5+dfsg-3 Candidate: 0.12.5+dfsg-3 Version table: *** 0.12.5+dfsg-3 0 360 http://cdn.debian.net testing/main Packages 50 http://cdn.debian.net unstable/main Packages 100 /var/lib/dpkg/status
Please help.
Thanks
On Sat, 25 Sep 2010 02:14:19 +0000, T o n g wrote:
However, whenever I use the '-net user' option, there will be no eth0 device. I.e.,
kvm -net user -boot d -cdrom grml-medium_2010.04.iso
Should read:
kvm -boot d -cdrom grml-medium_2010.04.iso
This I'll get an eth0 device, and an IP for it.
* T o n g wrote [25.09.10 04:14]: Hi,
Hi,
Whenever I use the '-net user' kvm command-line option, the guest grml will not have the eth0 device.
Yes, because the nic specification is missing.
According to https://help.ubuntu.com/community/KVM/Networking
,----- | By default, if you enable the usermode networking using the '-net | user' command-line option, the guest OS will get an IP address in | the 10.0.2.0/24 address space and the host OS will be reachable | at 10.0.2.2. `-----
The documentation is wrong. The current version of https://help.ubuntu.com/community/KVM/Networking does not contain this paragraph anymore. Seems to be fixed since 2010-09-20.
Is it my kvm problem or grml autoconfig's?
Neither. The the paragraph was wrong.
regards, Ulrich
On Sat, 25 Sep 2010 04:39:42 +0200, Ulrich Dangel wrote:
Whenever I use the '-net user' kvm command-line option, the guest grml will not have the eth0 device.
Yes, because the nic specification is missing.
thanks a lot!
On Sat, 25 Sep 2010 02:14:19 +0000, T o n g wrote:
However, whenever I use the '-net user' option, there will be no eth0 device. I.e.,
kvm -boot d -cdrom grml-medium_2010.04.iso
This I'll get an eth0 device, and an IP for it.
kvm -net user -boot d -cdrom grml-medium_2010.04.iso
This I won't get the eth0 device. The /etc/network/interfaces file only contains lo device, no eth0.
Is it my kvm problem or grml autoconfig's?
Most probably it's kvm. Still probing why....
* T o n g wrote [25.09.10 05:04]: Hi,
Is it my kvm problem or grml autoconfig's?
Most probably it's kvm. Still probing why....
The nic specification is missing. So its neither kvm nor grml-autoconfig problem but incorrect/missing commandline options.
Some examples: ,---- | -net nic,model=virtio -net user | -net nic,macaddr=00:1d:92:ab:3f:73 -net tap,ifname=tap2,script=no,downscript=no `----
regards, Ulrich
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Ulrich Dangel