keys.gnupg.net doesn't exist anymore. Need to select a valid server.
To replace gpg config by default and set your new keyserver instead of pointing on this wrong URL keys.gnupg.net , please edit ./gnupg/.gpg.conf and replace this url with the new one.
# the "--keyserver-options debug". keyserver hkp://keyserver.ubuntu.com:80 #keyserver http://http-keys.gnupg.net #keyserver mailto:[email protected]
As above, you only need to export your key to ONE keyserver, and they will share it amongst themselves.