[FL-IX] FL-IX MTU is 1500

Hello FL-IX Members, We occasionally receive reports from members who observe incrementing "giants" errors on their FL-IX ports. This is caused by members sending jumbo frames on the IX LAN. As a reminder, the MTU on the FL-IX LAN is 1500 bytes; jumbo frames are not supported. Please ensure that your FL-IX-facing layer 3 interface or interfaces have an IP MTU of 1500. Thank you, Ryan Woolley for the Community IX Tech Committee