From EMule Wiki
A Static ipfilter is an another ipfilter file, an addition to the ipfilter feature which is not auto updated.
You can create and edit this file manually in config dir.
Added by Stulle, since MorphXT v9.3
ADD: Static IP Filter (Stulle) remark: save "ipfilter_static.dat" in config dir
-  eMule docs how to find the config directory