OSX のtelnet でエラー

久々にルータのコンフィグをしようとし、mac からtelnet。しかし、見たことがないエラー。。。

[hogehoge@~]$ telnet 192.168.0.3
Password:
Trying 192.168.0.3...
Connected to 192.168.0.3.
Escape character is '^]'.
Illegal instruction: 4

そういえば、Catalina に上げてたので、ggrk しました。
https://qiita.com/9rq/items/cdd986dbb67886dd0b5b 参考にして、brew でインストール

[hogehoge@~]$ brew install telnet
Updating Homebrew...
==> Auto-updated Homebrew!
Updated 1 tap (homebrew/cask).
==> New Casks
boost-note
==> Updated Casks
calibre ✔                     emby-server                   max                           openinterminal-lite
beyond-compare                lastpass                      openineditor-lite

Warning: telnet 63 is already installed and up-to-date
To reinstall 63, run `brew reinstall telnet`

再インストールしろとのことなので。

[yoshihiko@~]$ brew reinstall telnet
==> Downloading https://homebrew.bintray.com/bottles/telnet-63.catalina.bottle.tar.gz
######################################################################## 100.0%
==> Reinstalling telnet
Error: Could not symlink bin/telnet
Target /usr/local/bin/telnet
is a symlink belonging to inetutils. You can unlink it:
  brew unlink inetutils

To force the link and overwrite all conflicting files:
  brew link --overwrite telnet

To list all files that would be deleted:
  brew link --overwrite --dry-run telnet
[hogehoge@~]$ brew unlink inetutils
Unlinking /usr/local/Cellar/inetutils/1.9.4_2... 57 symlinks removed
[hogehoge@~]$ brew link --overwrite telnet
[hogehoge@~]$
[hogehoge@~]$
[hogehoge@~]$ telnet 192.168.0.3
Trying 192.168.0.3...
Connected to 192.168.0.3.
Escape character is '^]'.

login: operator
Password:

router>

成功