Hello, Gert Andersen.
On 06/01/15 23.59 you wrote:

 GA> make netcards to be in some orden and mac setting is by 
 GA> /udev/rules/ 70-per* file with sybsystem and mac and eth* and eth0 
 GA> to 2 for 3 lines and cards. then in /etc/conf.d/net use 
 GA> mac_eth0="(mac-addr)" for each netcard. Gentoo handbook have info 
 GA> on how to make a firewall and iptables be set in the menuconfig 
 GA> for kernel so after have made the kernel to work first and the 
 GA> network working and runs with internet connect. then should it for 
 GA> iptables and firewall opdate the kernel menu file of config with 
 GA> setting networking of iptables and put in and add the networking 
 GA> setting with all for iptables and make sure all is done and then 
 GA> save the config file and compile the kernel with the new settings 
 GA> for iptables.

new install can have 70-persistence on very old udev, but you should drop it on
new kernel versions, read your "eselect news list" about udev, aslong you
random change problem, will be random problem

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