It seems that this has been fixed upstream in https://github.com/NetworkBlockDevice/nbd/commit/256f95a529f3d7128afbb890c11c2ebf4750d16f.
It seems that this has been fixed upstream in https:/ /github. com/NetworkBloc kDevice/ nbd/commit/ 256f95a529f3d71 28afbb890c11c2e bf4750d16f.