jesco_t [1] filed a deletion request for starnet++-bin [2]: out-of-date, not available upstream anymore, replaced by version 2 of developer. in AUR as starnet2-bin.
StarNet2 is not a version increase. It's a redeveloped tool with changed name (it's StarNet2 not StarNet 2) [1] https://aur.archlinux.org/account/jesco_t/ [2] https://aur.archlinux.org/pkgbase/starnet++-bin/
