[Mageia-dev] network interface renaming not working anymore

Thu Aug 16 21:30:53 CEST 2012

hi,
+
+When I finally rebooted a cauldron system that acts as a router, it turned 
+out the network interfaces eth0 and eth1 were switched, exposing 
+"internal" services to the outside world and leaving me without internet 
+access. Syslog contains:
+Aug 15 22:48:29 zem systemd-udevd[404]: error changing net interface name eth0 to eth1: File exists
+Aug 15 22:48:29 zem systemd-udevd[404]: error changing net interface name eth1 to eth0: File exists
+
+Of course this has worked for years, so it breaking is not something 
+anyone would expect. It also seems to be unneeded. After some looking 
+around I could (temporarily) fix it quite easily by adding:
+         ifrename -i eth0 -n rename0
+         ifrename -i eth1 -n rename1
+         ifrename -i rename0
+         ifrename -i rename1
+to /etc/init.d/network and describing the mapping in /etc/iftab . 
+So now I have two questions:
+- Has anyone else seen this?
+- What change is causing this: kernel, udev/systemd, or something else?
+
+The network devices use the same driver so there is no other way to 
+distinguish them than by MAC address or PCI ID.
+
+
+     Christiaan
+