I'm trying to set up a USB modem passthrough in kvm virt-manager. The host
is Fedora 20. The guest is Centos 6
$ ifconfig
wlp0s29u1u6: flags=4099<UP,BROADCAST,
MULTICAST> mtu 1500
ether 00:1a:3f:66:28:92 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
The modem works connecting from the host. As bridged networking does not
work with wireless I installed this second USB modem. The primary one is
PCI.
I configured the passthrough in the virt-manager interface but when I try
to start the guest I get this error message:
Error starting domain: Cannot set interface MAC on 'wlp0s29u1u6':
Device or resource busy
Traceback (most recent call last):
File "/usr/share/virt-manager/virtManager/asyncjob.py", line 91, in
cb_wrapper
callback(asyncjob, *args, **kwargs)
File "/usr/share/virt-manager/virtManager/asyncjob.py", line 127, in tmpcb
callback(*args, **kwargs)
File "/usr/share/virt-manager/virtManager/domain.py", line 1260, in
startup
self._backend.create()
File "/usr/lib64/python2.7/site-packages/libvirt.py", line 708, in create
if ret == -1: raise libvirtError ('virDomainCreate() failed', dom=self)
libvirtError: Cannot set interface MAC on 'wlp0s29u1u6': Device or resource
busy
What to do?
Regards, Clodoaldo
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