how to bring edns info to the author dns, does it not support?

[xd.chen at bitvalue.com.cn]

hi, every body:
      as all know: bind9 already support edns now.
      i build my local dns(ldns) and author dns(adns) with bind, and test as follows:
      1. request to ldns with edns info;( such as: dig @ldns cxdtest.com +subnet=192.168.1.128)
      2. ldns has no cache for the request,and foward the request to adns( i think it should carry the edns info ), but it does not carry the edns info to the adns.
      so, my question is how the ldns foward the request with edns info ? 

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