http - Stange records in access.log apache 2 -

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today notice stange records in access file of apache 2 webserver

::1 - - [25/jan/2011:14:13:31 +0200] "options * http/1.0" 200 -

does know these lines means ?

yes, it's options request, feature used http clients query server:

the options method represents request information communication options available on request/response chain identified request-uri. method allows client determine options and/or requirements associated resource, or capabilities of server, without implying resource action or initiating resource retrieval.

it's commonly used load balancers, firewalls , proxies check on status of http server, without requesting resource.

the ::1 @ start ipv6 address.


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