*Phylip*::ProtDist but no ::DnaDist?

hello, 

I see there is Bio::Tools::Run::Phylo::Phylip::ProtDist but I can't find
a module supporting the dnadist program in doc.bp.o. I even tried
substituting ::ProtDist for ::DnaDist and ::DNADist there, but those are
404.

Is there any reason why phylip support only includes proteins, and not
nucleotide, or am I missing something?

regards
FF