ID:186490 GXB transmitter channel "<name>" has reverse serial loopback enabled. GXB receiver channel "<name>" through XGMII state machine atom "<name>" has rxanalogreset signal connected. This is illegal.

CAUSE: The specified gigabit transceiver block (GXB) transmitter channel has reverse serial loopback enabled. The specified GXB receiver channel through the specified XGMII state machine atom has the rxanalogreset signal connected. This is illegal.

ACTION: Modify the design to remove the rxanalogreset signal on the XGMII state machine atom.