Tool for virtual networks

Casey Deccio casey at
Thu Jul 14 22:01:39 UTC 2022

Dear colleagues,

I've been developing a tool for building and experimenting with virtual networks, primarily for use with teaching network protocols.  It's an active work-in-progress, but I thought it might be time to reach out to NANOG in case anyone else might find it useful and/or might have feedback to offer.  Here is the code:

It includes layer-2 switches, VLANs and trunking, and routers, all using Linux processes in their own namespaces as network "nodes".  It was inspired by mininet ( but it was developed from scratch to meet different needs.

The README has additional information.  If you install and run the code, *please* do it in a *virtual machine*.  At this point, it requires superuser capabilities to run things like "ip link", "ip addr", and "sysctl", among other things, using sudo.  Much on the to-do list, but it meets my immediate needs.  Just wanted to share in the mean time.


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