in reply to LWP issuing two CONNECT requests when only one is asked for?
It looks tome like LWP::UserAgent is asking for the remote server, obtaining a connection to the proxy, and then the proxy is failing to gain access to the remote server (Forbidden). The error messages are a little convoluted, but it seems to me that UserAgent reports "connection established" when it gets a response from the proxy. And the first message simply is oblivious to the fact that there is a proxy mediating the connection. Then the second response is the one the proxy obtains when it attemps to perform the mediation.