pkg_add -r libsigc++
Error: Unable to get ftp://ftp.freebsd.org/pub/FreeBS ... test/libsigc++.tbz: File unavailable (e.g., file not found, no access)
pkg_add: unable to fetch 'ftp://ftp.freebsd.org/pub/FreeBSD/ports/amd64/packages-9.1-release/Latest/libsigc++.tbz' by URL