message: No pacing during initCwnd
  Summary: as title
diff: @@ -264,6 +264,9 @@ void BbrCongestionController::updatePacing() noexcept {
  if (!conn_.pacer) {
  return;
  }
  + if (conn_.lossState.totalBytesSent < initialCwnd_) {
  + return;
  + }
  auto bandwidthEstimate = bandwidth();
  if (!bandwidthEstimate) {
  return;
  