PostgreSQL Errors

gistfile1.sql

CREATE TABLE network_info (
  network         CIDR          NOT NULL,
  some_info       TEXT          NULL,
  PRIMARY KEY (network)
);

CREATE TABLE ipaddr_info (
  ipaddr          INET          NOT NULL,
  some_info       INT           NULL,
  PRIMARY KEY (ipaddr, some_info)
);

CREATE TABLE ipaddrs (
  addr            INET          NOT NULL,
);

CREATE VIEW ipaddr_summary AS
SELECT DISTINCT
  i.addr                  AS ip_address,
  a.some_info             AS network_info,
  COUNT(b.ipaddr)         AS ip_info_count
FROM ipaddrs AS i
LEFT JOIN network_info AS a
  ON (i.addr << a.network)
LEFT JOIN ipaddr_info AS b
  ON (i.addr = b.ipaddr)
GROUP BY i.addr, a.some_info
;

test_tbl=# CREATE INDEX idx_network_info_network_gist
test_tbl-#   ON network_info USING gist(network);
ERROR:  data type cidr has no default operator class for access method "gist"
HINT:  You must specify an operator class for the index or define a default operator class for the data type.

test_tbl=# CREATE INDEX idx_ipaddr_info_ipaddr_gist
test_tbl-#   ON ipaddr_info USING gist(ipaddr);
ERROR:  data type inet has no default operator class for access method "gist"
HINT:  You must specify an operator class for the index or define a default operator class for the data type.

inet_ops did it. Thank you