The ebuild assumes p0f.tgz is the version it's built for, which is bad since there's a new one and the digest differs. Fixed/new ebuild attached.
Created attachment 21946 [details] Fixed/new version of p0f ebuild
Forgot bugzilla doesn't preserve filenames... latest version is 2.0.3
Could you perhaps post a diff instead of the full ebuild please?
Created attachment 21967 [details] ebuild diff as per zhen's request diff between 2.0.2 & new 2.0.3
digest added and tested