Sun, 05 Oct 2008
qemu IP address patch
I sometimes use the qemu virtualization system, or its cousin kvm, for creating virtual computers to test software in. Conveniently, qemu makes networking those really easy.
Unfortunately, the IP addresses it assigns for virtualization happen to be in the same subnet as my desktop at work (at CC, 10.0.2.x). I had some fear of changing a piece of software as presumably complex as qemu.
I forged ahead and came up with a patch that I posted to the qemu-devel mailing list. I'm just wring this post in case someone wonders, "How can I change the IP address of the user net layer used by qemu to avoid a conflict?"
The answer is as easy as replacing the string "10.0.2" with "10.0.3" globally across the qemu codebase and recompiling. If that mailing list post ever goes away, I have a local copy of the patch.
(This work was sponsored by CC, but pending an okay from CC, you should be free to use it under the terms of the WTFPL.)
