m.au> 1218581571 -0500
committer Rusty Russell <rusty@rustcorp.com.au> 1218527572 +1000

lguest: don't set MAC address for guest unless specified

This shows up when trying to bridge:
	tap0: received packet with  own address as source address

As Max Krasnyansky points out, there's no reason to give the guest the
same mac address as the TUN device.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Max Krasnyansky <maxk@qualcomm.com>

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