Corresponding web filtering log:
2014:11:03-21:27:07 vpn-1 httpproxy[5965]: id="0003" severity="info" sys="SecureWeb" sub="http" request="(nil)" function="plain_write_vector" file="epoll.c" line="1095" message="Write error on the epoll handler 90 (Connection refused)"
2014:11:03-21:27:07 vpn-1 httpproxy[5965]: id="0003" severity="info" sys="SecureWeb" sub="http" request="0xa8c6800" function="send_request_headers" file="request.c" line="841" message="epoll_write failed"
2014:11:03-21:27:07 vpn-1 httpproxy[5965]: id="0002" severity="info" sys="SecureWeb" sub="http" name="web request blocked" action="block" method="GET" srcip="2003:****:****:****:****:****:****:ffc0" dstip="2003:2:4:86:80:156:86:64" user="" ad_domain="" statuscode="502" cached="0" profile="REF_HttProInternalde (Internal_Default)" filteraction="REF_HttCffInterConteFilte (Internal content filter action)" size="2640" request="0xa8c6800" url="kundencenter.telekom.de/.../33.0" exceptions="" category="178" reputation="trusted" categoryname="Internet Services"
Is this a bug?