I recently bumped bind-tools to 9.4.0_beta4, because all 9.3.x-versions don't support the SPF-record (host -t SPF hostname). I don't use bind itself, so I didn't bother about bind, but that might be updated as well. Probably add masked ebuilds to portage? I'll attach mine, it also contains a fix for the SO_BSDCOMPAT-bug.
Created attachment 103746 [details] bind-tools-9.4.0_beta4.ebuild
let's wait for at least RC-version.