CURL and hostnames

curl

core@node-001 ~ $ curl --unix-socket /var/run/docker.sock http:/plugins
{"message":"page not found"}
core@node-001 ~ $ curl -V
curl 7.66.0 (x86_64-cros-linux-gnu) libcurl/7.66.0 OpenSSL/1.1.1g zlib/1.2.11
Release-Date: 2019-09-11
Protocols: dict file ftp ftps gopher http https imap imaps pop3 pop3s rtsp smtp smtps telnet tftp 
Features: AsynchDNS GSS-API HTTPS-proxy IPv6 Kerberos Largefile libz NTLM SPNEGO SSL TLS-SRP UnixSockets

gistfile1.txt

[root@centos7 ~]# curl --unix-socket /var/run/docker.sock http:/plugins
[{"Config":{"Args":{"Description":"","Name":"","Settable":null,"Value":null},"Description":"Loki Logging Driver","DockerVersion":"17.09.0-ce","Documentation":"https://github.com/grafana/loki","Entrypoint":["/bin/docker-driver"],"Env":[{"Description":"Set log level to output for plugin logs","Name":"LOG_LEVEL","Settable":["value"],"Value":"info"}],"Interface":{"Socket":"loki.sock","Types":["docker.logdriver/1.0"]},"IpcHost":false,"Linux":{"AllowAllDevices":false,"Capabilities":null,"Devices":null},"Mounts":[{"Description":"Optional external pipeline files","Destination":"/data","Name":"data","Options":["bind","ro"],"Settable":["source","destination"],"Source":"","Type":"none"}],"Network":{"Type":"host"},"PidHost":false,"PropagatedMount":"","User":{},"WorkDir":"","rootfs":{"diff_ids":["sha256:420ae9bdb0670e32280fd9be7e1c9c1f5a09ce616177cbc47f09c46d3ecc2d69"],"type":"layers"}},"Enabled":true,"Id":"b5b76c65671a84c4e5c9281088216793038c9c1d0dc0d14b8371d3b1dfd74c11","Name":"loki:latest","PluginReference":"docker.io/grafana/loki-docker-driver:1.5.0","Settings":{"Args":[],"Devices":[],"Env":["LOG_LEVEL=info"],"Mounts":[]}}]
[root@centos7 ~]# curl -V
curl 7.29.0 (x86_64-redhat-linux-gnu) libcurl/7.29.0 NSS/3.36 zlib/1.2.7 libidn/1.28 libssh2/1.4.3
Protocols: dict file ftp ftps gopher http https imap imaps ldap ldaps pop3 pop3s rtsp scp sftp smtp smtps telnet tftp 
Features: AsynchDNS GSS-Negotiate IDN IPv6 Largefile NTLM NTLM_WB SSL libz unix-sockets