=> Bootstrap dependency digest>=20010302: found digest-20190127
=> Fetching bind-9.14.8.tar.gz
=> Total size: 6403140 bytes
ftp: Error retrieving file `503 Backend unavailable, connection failed'
fetch: Unable to fetch expected file bind-9.14.8.tar.gz
=> Checksum SHA1 OK for bind-9.14.8.tar.gz
=> Checksum RMD160 OK for bind-9.14.8.tar.gz
=> Checksum SHA512 OK for bind-9.14.8.tar.gz