nc6: nc6 (Netcat6 network utility) nc6: nc6: netcat6 is a clone of the original netcat utility, but it is a total nc6: rewrite of netcat, with several advantages: full support for IPv6, nc6: It is far more efficient, utilizing flexible buffering and minimal nc6: (or no) data copying or analysis, can support servers or clients that use nc6: TCP half-close. nc6: nc6: nc6: nc6: