I experienced this problem as well, here is the udiff of what my file looked like before and after:
diff -Nrua 70-persistent-net.rules /etc/udev/rules.d/70-persistent-net.rules
--- 70-persistent-net.rules 2008-01-16 15:14:32.000000000 -0600
+++ /etc/udev/rules.d/70-persistent-net.rules 2008-03-31 14:28:58.000000000 -0500
@@ -1,11 +1,10 @@
-# This file maintains persistent names for network interfaces.
-# See udev(7) for syntax.
+# This file was automatically generated by the /lib/udev/write_net_rules
+# program run by the persistent-net-generator.rules rules file.
#
-# Entries are automatically added by the 75-persistent-net-generator.rules
-# file; however you are also free to add your own entries.
+# You can modify it, as long as you keep each rule on a single line.
I experienced this problem as well, here is the udiff of what my file looked like before and after:
diff -Nrua 70-persistent- net.rules /etc/udev/ rules.d/ 70-persistent- net.rules net.rules 2008-01-16 15:14:32.000000000 -0600 rules.d/ 70-persistent- net.rules 2008-03-31 14:28:58.000000000 -0500 write_net_ rules net-generator. rules rules file. net-generator. rules
--- 70-persistent-
+++ /etc/udev/
@@ -1,11 +1,10 @@
-# This file maintains persistent names for network interfaces.
-# See udev(7) for syntax.
+# This file was automatically generated by the /lib/udev/
+# program run by the persistent-
#
-# Entries are automatically added by the 75-persistent-
-# file; however you are also free to add your own entries.
+# You can modify it, as long as you keep each rule on a single line.
# PCI device 0x11ab:0x4353 (sky2) =="00:a0: d1:72:01: cf", NAME="eth0" =="00:a0: d1:72:01: cf", ATTR{type}=="1", NAME="eth0"
-SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}
+SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}
-# PCI device 0x8086:0x4222 (ipw3945) =="00:19: d2:8a:0c: 19", NAME="eth1" =="00:19: d2:8a:0c: 19", ATTR{type}=="1", NAME="wlan0"
-SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}
+# PCI device 0x8086:0x4222 (iwl3945)
+SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}