Fix ipv6 stuffs 5

pkg/http/client.go

@@ -120,6 +120,7 @@ func NewHTTPClient(token string, maxRetries int, timeoutSecs int, ensureIPv6Host
 		log.Warnf("Failed to fetch IPv6 hosts: %v", err)
 	}
 	client.ipv6Hosts = ipv6List
+	log.Debugf("Fetched %d IPv6 hosts", len(ipv6List))
 
 	// set ipv6 transport
 	dialer := &net.Dialer{}
@@ -234,5 +235,6 @@ func (r *HTTPClient) replaceHostIfNeeded(req *http.Request) {
 		newURL := *req.URL
 		newURL.Host = newHost
 		req.URL = &newURL
+		r.log.Warnf("Replaced host %s with %s", host, newHost)
 	}
 }