nixos/tests: fix bonding test (#375496)

                }

              ];

            };

            # virtio-net reports its speed and duplex as "unknown" by default,

            # which confuses the 802.3ad logic. However, you can just tell it

            # to pretend to have any link speed with ethtool, so do that.

            systemd.services.fake-link-settings = {

              path = [ pkgs.ethtool ];

              script = ''

                ethtool -s enp1s0 speed 1000 duplex full

                ethtool -s enp2s0 speed 1000 duplex full

              '';

              wantedBy = [ "network.target" ];

            };

          };

      in

      {