Hi, does any one know if the TP Link tl-r605 and the TL-SG108PE combined support dhcp blocking?  We just picked up a new customer.  They have a neighborhood sharing internet.  They simply have a router and a network switch.  User are plugging their router in backward, causing dhcp everywhere.  We would like to replace their existing router and switches with tp link if possible.  Any ideas which tp link router/switch can support this?