RTMP=off: RTMP protocol support via librtmp
SMB=off: SMB/CIFS support
TLS_SRP=off: TLS-SRP (Secure Remote Password) support
====> GSSAPI Security API support: you have to select exactly one of them
GSSAPI_BASE=off: GSSAPI support via base system (needs Kerberos)
GSSAPI_HEIMDAL=off: GSSAPI support via security/heimdal
GSSAPI_MIT=off: GSSAPI support via security/krb5
GSSAPI_NONE=on: Disable GSSAPI support
ftp/curl in poudriere) so is GSSAPI_MIT=on. TLS_SRP. DEFAULT_VERSIONS+=ssl=libressl is set in poudriere.d/make.conf. GSSAPI_MIT). And maybe, also TLS_SRP was turned on and I did not know it.