=> Bootstrap dependency digest>=20010302: found digest-20190127
=> Fetching libsndfile-1.0.31.tar.bz2
=> Total size: 875335 bytes
ftp: Can't LOOKUP `github.com:https': No address associated with hostname
ftp: Can't connect to `github.com:https'
fetch: Unable to fetch expected file libsndfile-1.0.31.tar.bz2
ftp: Error retrieving file `404 Not Found'
fetch: Unable to fetch expected file libsndfile-1.0.31.tar.bz2
ftp: Can't connect to `2001:470:a085:999::21:80': Connection timed out
ftp: Can't connect to `ftp6.NetBSD.org:http'
fetch: Unable to fetch expected file libsndfile-1.0.31.tar.bz2
ftp: Error retrieving file `404 Not Found'
fetch: Unable to fetch expected file libsndfile-1.0.31.tar.bz2
ftp: Can't connect to `2001:470:a085:999::21:80': Connection timed out
ftp: Can't connect to `199.233.217.201:80': Connection timed out
ftp: Can't connect to `ftp.NetBSD.org:http'
fetch: Unable to fetch expected file libsndfile-1.0.31.tar.bz2
*** Error code 1

Stop.
bmake: stopped in /usr/pkgsrc/audio/libsndfile