The version EPiServer is running is very old now (januari 2011) https://www.nuget.org/packages/log4net/1.2.10 and there are a lot of other nuget packages that also runs log4net but newer versions that wont install because we can't update log4net.

This is becoming a bigger and bigger problem so please try to include this in some near feature. I know there are different keys and so, but with a do like this guide we developers should be able to fix the problems that will happen.