I tested openSUSE-13.2-OpenStack-Guest.x86_64-0.0.10-Build3.1 and there is no rule in 70-persistent-net.rules any more (except the one that was created on the boot): linux:~ # cat /etc/udev/rules.d/70-persistent-net.rules [...] # PCI device 0x8086:0x100e (e1000) SUBSYSTEM=="net", ACTION=="add", DRIVERS=="e1000", ATTR{dev_id}=="0x0", KERNELS=="0000:00:03.0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0" linux:~ # ip -4 -o a 1: lo inet 127.0.0.1/8 scope host lo [...] 2: eth0 inet 10.0.2.15/24 brd 10.0.2.255 scope global eth0 [...] 3: docker0 inet 172.17.0.1/16 scope global docker0 [...]