Happens here as well:
$ host -T rsync.sanesecurity.net
socket.c:2486: REQUIRE((((sock) != ((void *)0)) && (((const isc__magic_t
*)(sock))->magic == ((('I') << 24 | ('O') << 16 | ('i') << 8 | ('o'))))))
failed.
Abortado
$ dpkg -S `which host`
bind9-host: /usr/bin/host
$ apt-cache policy bind9-host
bind9-host:
Instalados: 1:9.6.1.dfsg.P1-3
Candidato: 1:9.6.1.dfsg.P1-3
Tabla de versión:
*** 1:9.6.1.dfsg.P1-3 0
500 http://ftp.uk.debian.org unstable/main Packages
100 /var/lib/dpkg/status

