Ignore cookie for all subdomains


I use my piwik-installation for a website with a domian like cv.example.org and I publish domains a lá one.cv.example.org, two.cv.example.org, three.cv.example.org. in my visitor-log I see seperately requests on those domains as I wont. I wont piwik to ignore my own visits and set ignore cookie via piwik user interface at the moment. BUT I have to set the igner-cookie for each subdomian.

is it possible (may be programmately) to set the ignode cookie generaly for all subdomains *.cv.example.org?

thanks for tipps and