Avaya has released software v18.104.22.168 for the Ethernet Routing Switch 8600. It should be noted that Avaya has pulled software release 22.214.171.124 from their website. The release notes indicate that the reason for this was “a datapath issue has been identified that may impact the ability to learn MAC addresses and forward packets for which the source MAC address is unknown. This will only happen if the traffic enters the same LANE as the IST is located on and if the IST occupies the first port in the LANE. Also, this is only seen on card types 8630GBR, 8648GBRS, 8634XGRS and 8612XLRS. (wi00866354)”.