Upgrade colinux from 0.7.3 to 0.7.4

I just reinstall my colinux because reinstall whole xp. The 0.7.4 is the colinux stable version this time. However I just can't make my colinux network work. After try and error several days, I googled the error message and just found the answer is in the README.txt.

Upgrading from coLinux 0.7.2 and before
-- Some dev distries increase eth1, eth2, eth3, ... on every boot.
Typicaly have no network, but can see it with "cat /proc/net/dev".
As workarrount set an unique MAC address for all network interfaces
in config file. Or disable udev.
Debian: Remove all entries from /etc/udev/rules.d/z25_persistent-net.rules

So I just follow the instruction to delete all the content in above file, then work.
There could be two choices:
vi /etc/udev/rules.d/z25_persistent-net.rules
OR
vi /etc/udev/rules.d/70-persistent-net.rules