I recently built cvs, and found that I can no longer have multiple instances of qemu using tun/tap.
the invocation of qemu includes, for each instance: -net nic -net tap,script=/etc/qemu-ifup /etc/qemu-ifup: #!/bin/sh sudo /sbin/ifconfig $1 192.168.2.196 sudo brctl addif br0 $1 strace of qemu-system-x86_64: ... open("/dev/net/tun", O_RDWR) = 3 ioctl(3, TUNSETIFF, 0x7fffca661bf0) = -1 EBUSY (Device or resource busy) write(2, "warning: could not configure /de"..., 72warning: could not configure /dev/net/tun: no virtual network emulation ) = 72 close(3) = 0 write(2, "Could not initialize device \'tap"..., 34Could not initialize device 'tap' ) = 34 exit_group(1) = ? Process 8206 detached The only thing that has changed is building qemu from cvs yesterday. Prior to that, I had been using cvs from a few weeks ago. I'm not too familiar with qemu source, but I will start looking at some of the commits from the past few weeks for anything. Any ideas? Thanks. _______________________________________________ Qemu-devel mailing list Qemu-devel@nongnu.org http://lists.nongnu.org/mailman/listinfo/qemu-devel