There's a prototype Mirage based DNS server that does that, Jitsu. See there: http://www.skjegstad.com/blog/2015/08/17/jitsu-v02/ http://www.skjegstad.com/bl

There's a prototype Mirage based DNS server that does that, Jitsu. See there: http://www.skjegstad.com/blog/2015/08/17/jitsu-v02/ http://www.skjegstad.com/blog/2015/08/17/jitsu-v02/ Quote: "Jitsu - or Just-in-Time Summoning of Unikernels - is a prototype DNS server that can boot virtual machines on demand. When Jitsu receives a DNS query, a virtual machine is booted automatically before the query response is sent back to the client. If the virtual machine is a unikernel, it can boot in milliseconds and be available as soon as the client receives the response. To the client it will look like it was on the whole time."