[1] [CITE@en[mod_remoteip - Apache HTTP Server]]
( ([TIME[2012-01-10 03:11:16 +09:00]] 版))
<http://httpd.apache.org/docs/2.3/mod/mod_remoteip.html>

[2] [CITE@en[draft-stecher-icap-subid-00 - ICAP Extensions]]
( ([TIME[2014-08-31 17:09:58 +09:00]] 版))
<http://tools.ietf.org/html/draft-stecher-icap-subid-00#section-3>