CREATE FUNCTION iplike(text, text) RETURNS boolean
    AS '/opt/OpenNMS/lib/iplike.so', 'iplike'
    LANGUAGE c STRICT;

ALTER FUNCTION public.iplike(text, text) OWNER TO postgres;

Cause the following errors:

psql:full-dump.jeckle:372: ERROR:  could not access file "/opt/OpenNMS/lib/iplike.so": No such file or directory
psql:full-dump.jeckle:375: ERROR:  function public.iplike(text, text) does not exist