Isso acontece se você ativar a opção correta nas configurações:
Você também precisará remover o sinalizador Private do torrent que deseja compartilhar localmente. De acordo com a ajuda:
Enable Local Peer Discovery allows µTorrent to attempt to discover local peers via multicast. If a peer is considered local, transfer rates with the peer will not be limited unless Limit local peer bandwidth is also enabled. Local Peer Discovery will not be used for .torrent files with the 'private' flag set. This option serves as a default setting for newly-added torrent jobs, and does not retroactively affect previously-added. This option can be disabled on a per torrent job basis in the respective torrent job's Properties dialog.