Hey, how do I make a virtual interface name predictable

Question

Deadly Q Continuum of Death aka Le Baguette Toxique The Maximalist Minimalist vichy republican From Outer Space

Hey, how do I make a virtual interface name predictable

in libvirt usina QEMU/KVM?
The thing is that I created a bridge interface on the host and I connect my VMs to this bridge.
When it starts I have a vnet0 interface, when I restart it it becames vnet1 and so on

0

31.10.2021

5 ответов

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Martin Rys

Create a bridge yourself and point the VMs to that

0

31.10.2021

Sebastian Dicke

Ender
Simple hack: grep output of ip -o link and take ev...

Ip can format it output as JSON. Tools like jq can then used to extract the values by key.

0

31.10.2021

Ender

Sebastian Dicke
Ip can format it output as JSON. Tools like jq can...

Thank you!!! Less dirty hacks in my scripts I'll have :)

0

31.10.2021

Deadly Q Continuum of Death aka Le Baguette Toxique The Maximalist Minimalist vichy republican From Outer Space Автор вопроса

Martin Rys
Create a bridge yourself and point the VMs to that

That's what I did, I have auto br0 iface br0 inet manual bridge_ports eth0 bridge_waitport 0 bridge_fd 0 in my /etc/network/interfaces and my VM points to it with this config generated by virt-install <interface type='bridge'> <mac address='redacted'/> <source bridge='br0'/> <model type='e1000'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> </interface>

0

01.11.2021

Ender · Accepted Answer

Ender

Simple hack: grep output of ip -o link and take everything that starts with vnet and not yet connected to the bridge.

0

31.10.2021

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Hey, how do I make a virtual interface name predictable

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