=> Bootstrap dependency digest>=20211023: found digest-20220214
=> Fetching knbc.zip
=> Total size: 8760788 bytes
FFFFFFFFFFFFFFFF:error:0A000086:SSL routines:tls_post_process_server_certificate:certificate verify failed:/usr/src/crypto/external/bsd/openssl/dist/ssl/statem/statem_clnt.c:1889:
ftp: Can't connect to `github.com:https'
fetch: Unable to fetch expected file knbc.zip
ftp: Error retrieving file `404 Not Found'
fetch: Unable to fetch expected file knbc.zip
ftp: Can't connect to `2001:470:a085:999::21:80': No route to host
ftp: Can't connect to `ftp6.NetBSD.org:http'
fetch: Unable to fetch expected file knbc.zip
ftp: Error retrieving file `404 Not Found'
fetch: Unable to fetch expected file knbc.zip
ftp: Error retrieving file `404 Not Found'
fetch: Unable to fetch expected file knbc.zip
*** Error code 1

Stop.
make: stopped in /shared/pkgsrc/textproc/nltk_data-knbc