Comment 3 for bug 1338781

Looking at the code, it looks like you don't have http_proxy set in your environment:

# Deal with GPG over http proxy
if [ -n "${http_proxy:-}" ]; then
    DOWNLOAD_KEYSERVER="hkp://p80.pool.sks-keyservers.net:80"
fi

Instead you said you were using hkp://pool.sks-keyservers.net which is the pool of server we use for machines that aren't being an http proxy.