c067d295_nuPG_Commands___Key_Management__en_revoked_and_unrevoked_keys_
[include-revoked] honor-http-proxy
For keyserver schemes that use HTTP (such as HKP), try to access the keyserver over the proxy set with the environment variable "http_proxy".
GnuPG Commands - Key Management
When receiving or searching for a key, include keys that are marked on the keyserver as revoked. Note that this option is always set when using the NAI HKP keyserver, as this keyserver does not differentiate between revoked and unrevoked keys.