Udev 2.0 - fairly painless upgrade from 1.97

[lyallp]

Things I had to do...

• delete /etc/udev.d/rules.d/70-* as instructed in the emerge udev output
  
• udevadm test-builtin net_id /sys/class/net/eth0 2> /dev/null # find out what my new interface will be (used below - in my case enp2s0)
  
• rm /etc/init.d/net.eth0
  
• cd /etc/init.d/ && ln -s net.lo net.enp2s0 # (enp2s0 was output in the second step and I always get symlinks back to front)
  
• rc-update del /etc/init.d/net.eth0 default # (remove the old network interface from default runlevel)
  
• rc-update add /etc/init.d/net.enp2s0 default # (put the new network interface in the default runlevel)
  
• you may need to tweak /etc/conf.d/net to change your interface name, in my case, I overlooked it and things just worked because I was using DHCP anyway but for completeness, you should tweak it.
  
• Reboot - it's the most disruptive but easiest way to get everything up and running
  

FYI: I have a separate /usr filesystem inside LVM on a RAID and don't use an initrd, things work fine (so far).
_________________
...Lyall

[gabrielg]

[roarkh]

I found that I had to also remove the file 80-net-name-slot.rules from /etc/udev/rules.d to get ethernet working, other than that it was fairly painless for me as well. It may be worth adding that if you have manually configured your network devices you may need to edit /etc/conf.d/net to update the interface names.

Thanks for posting this helpful guide.

[gabrielg]