I think that the documentation should reflect that e100 is in the kernel, and does not need to be compiled. See this link where D. Drake mentions the same: http://bugs.gentoo.org/show_bug.cgi?id=77396 And this backup link where M. Holzer mentions that e100 is included in the 2.6 kernel: http://bugs.gentoo.org/show_bug.cgi?id=67594 As mentioned in the first of the links, the phrase "If appropriate..." is not very informative. Reproducible: Always Steps to Reproduce: 1. 2. 3.
Marked e100/e1000 as being 2.4-kernels only (modules, that is). Thanks for reporting.