 FreeBSD 's TCP / IP stack is based on the <unk> implementation of TCP / IP which greatly contributed to the widespread adoption of these protocols . FreeBSD also supports IPv6 , <unk> , <unk> , and wireless networking ( Wi @-@ Fi ) . The IPv6 and <unk> stacks were taken from the <unk> project . Also , FreeBSD supports IPX and AppleTalk protocols , but they are considered old and it is planned to drop support of them in the upcoming FreeBSD 11 @.@ 0 . 
