varnishlog -c -m 'RxHeader:^[^:]+$'
cat
  357 ReqStart     c 109.237.245.69 54717 1026029224
  357 RxRequest    c GET
  357 RxURL        c /reboot/images/mn-horizon-list.png
  357 RxProtocol   c HTTP/1.1
  357 RxHeader     c Host: cache.20minutes.fr
  357 RxHeader     c User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; fr; rv:1.9.1.8) Gecko/20100202 Firefox/3.5.8
  357 RxHeader     c Accept: image/png,image/*;q=0.8,*/*;q=0.5
  357 RxHeader     c Accept-Language: fr,fr-fr;q=0.8,en-us;q=0.5,en;q=0.3
  357 RxHeader     c Accept-Encoding: gzip,deflate
  357 RxHeader     c Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
  357 RxHeader     c Keep-Alive: 300
  357 RxHeader     c Connection: keep-alive
  357 RxHeader     c Referer: http://cache.20minutes.fr/minified/article-prepend-1305627775.css
  357 RxHeader     c Cookie: pdomid=8; pbw=%24b%3D12030%3B%24o%3D11051%3B%24sh%3D1024%3B%24sw%3D1280; pid=3520423526970458632; xtvrn=$290428$; __utma=141384369.731090699.1296729536.1315317363.1315383793.234; __utmz=141384369.1315383793.234.349.utmcsr=google|utmccn=(organic)|u
  357 RxHeader     c 2med=2
  357 VCL_call     c recv
  357 VCL_Log      c X-Backend: bush_pilote_cdn_16
  357 VCL_return   c lookup
  357 VCL_call     c hash
  357 Hash         c /reboot/images/mn-horizon-list.png
  357 Hash         c cache.20minutes.pullorigin.pilote-cdn.sfr-sh.fr
  357 VCL_return   c hash
  357 Hit          c 970967353
  357 VCL_call     c hit deliver
  357 VCL_call     c deliver deliver
  357 TxProtocol   c HTTP/1.1
  357 TxStatus     c 200
  357 TxResponse   c OK
  357 TxHeader     c Server: Apache
  357 TxHeader     c Last-Modified: Tue, 16 Aug 2011 09:33:22 GMT
  357 TxHeader     c ETag: "1242ea-78-4aa9c12179c80"
  357 TxHeader     c Content-Type: image/png
  357 TxHeader     c X-Pad: avoid browser bug
  357 TxHeader     c Content-Length: 120
  357 TxHeader     c Accept-Ranges: bytes
  357 TxHeader     c Date: Wed, 07 Sep 2011 08:24:00 GMT
  357 TxHeader     c X-Varnish: 1026029224 970967353
  357 TxHeader     c Age: 166298
  357 TxHeader     c Connection: keep-alive
  357 TxHeader     c Via: 1.1 proxy-1.pilote-cdn.sfr-sh.fr, 1.1 cbv4-ncdn-cache05
  357 Length       c 120
  357 ReqEnd       c 1026029224 1315383840.528788090 1315383840.528844595 0.092246056 0.000037193 0.000019312