curl -I av -vvv
* About to connect() to av port 80 (#0)
*   Trying 77.238.184.24... connected
> HEAD / HTTP/1.1
> User-Agent: curl/7.22.0 (x86_64-pc-linux-gnu) libcurl/7.22.0 OpenSSL/1.0.1 zlib/1.2.3.4 libidn/1.23 librtmp/2.3
> Host: av
> Accept: */*
>
< HTTP/1.1 400 Bad Request
HTTP/1.1 400 Bad Request
< Date: Wed, 26 Nov 2014 17:20:49 GMT
Date: Wed, 26 Nov 2014 17:20:49 GMT
< P3P: policyref="http://info.yahoo.com/w3c/p3p.xml", CP="CAO DSP COR CUR ADM DEV TAI PSA PSD IVAi IVDi CONi TELo OTPi OUR DELi SAMi OTRi UNRi PUBi IND PHY ONL UNI PUR FIN COM NAV INT DEM CNT STA POL HEA PRE LOC GOV"
P3P: policyref="http://info.yahoo.com/w3c/p3p.xml", CP="CAO DSP COR CUR ADM DEV TAI PSA PSD IVAi IVDi CONi TELo OTPi OUR DELi SAMi OTRi UNRi PUBi IND PHY ONL UNI PUR FIN COM NAV INT DEM CNT STA POL HEA PRE LOC GOV"
< Cache-Control: private
Cache-Control: private
< Vary: Accept-Encoding
Vary: Accept-Encoding
< Content-Type: text/html; charset=iso-8859-1
Content-Type: text/html; charset=iso-8859-1
< Age: 0
Age: 0
< Connection: keep-alive
Connection: keep-alive
< Server: ATS/4.0.2
Server: ATS/4.0.2
* no chunk, no close, no size. Assume close to signal end

<
* Closing connection #0