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Last update: 2006-09-06

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End: 2007-01

VirtNet

network stack virtualization for FreeBSD

Traditionally, UNIX operating systems have been equipped with monolithic network stack implementations, meaning all user processes have to cooperatively share a single networking subsystem. The introduction of the network stack cloning model enables the kernel to simultaneously maintain multiple independent and isolated network stack instances. Combined with forcible binding of user processes to individual network stacks, this concept can bring us a step closer to an efficient pseudo virtual machine functionality which opens new possibilities particularly in virtual hosting applications, as well as in other less obvious areas such as network simulation and advanced VPN provisioning. This project is focused on design, implementation and performance aspects of experimental clonable network stack support in the FreeBSD kernel.

  • 2003-06-09: Detailed description of the project in a paper by Marko Zec, Implementing a Clonable Network Stack in the FreeBSD Kernel, in Proceedings of the 2003. USENIX Annual Technical Conference, San Antonio, Texas, June 2003. .pdf (248 kB)

Project VirtNet

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