On my Freebsd box, we have DUPLICATE ports listening, both tcp4 and tcp6 listening by default. Is tcp6 really necessary and is it ok to turn off in the kernel or in rc.conf????
tcp6 0 0 *.21 *.* LISTEN
tcp4 0 0 *.21 *.* LISTEN
tcp4 0 0 *.26 *.* LISTEN
tcp6 0 0 *.26 *.* LISTEN
tcp4 0 0 *.25 *.* LISTEN
tcp6 0 0 *.25 *.* LISTEN
tcp4 0 0 *.3306 *.* LISTEN
tcp4 0 0 *.110 *.* LISTEN
tcp6 0 0 *.110 *.* LISTEN
tcp4 0 0 *.995 *.* LISTEN
tcp6 0 0 *.995 *.* LISTEN
tcp4 0 0 *.143 *.* LISTEN
tcp6 0 0 *.143 *.* LISTEN
tcp4 0 0 *.993 *.* LISTEN
tcp6 0 0 *.993 *.* LISTEN
tcp4 0 0 *.2084 *.* LISTEN
tcp4 0 0 *.6666 *.* LISTEN
tcp4 0 0 *.2096 *.* LISTEN
tcp4 0 0 *.2087 *.* LISTEN
tcp4 0 0 *.2083 *.* LISTEN
tcp4 0 0 *.80 *.* LISTEN
tcp4 0 0 *.443 *.* LISTEN
tcp4 0 0 *.465 *.* LISTEN
tcp6 0 0 *.465 *.* LISTEN
tcp6 0 0 *.21 *.* LISTEN
tcp4 0 0 *.21 *.* LISTEN
tcp4 0 0 *.26 *.* LISTEN
tcp6 0 0 *.26 *.* LISTEN
tcp4 0 0 *.25 *.* LISTEN
tcp6 0 0 *.25 *.* LISTEN
tcp4 0 0 *.3306 *.* LISTEN
tcp4 0 0 *.110 *.* LISTEN
tcp6 0 0 *.110 *.* LISTEN
tcp4 0 0 *.995 *.* LISTEN
tcp6 0 0 *.995 *.* LISTEN
tcp4 0 0 *.143 *.* LISTEN
tcp6 0 0 *.143 *.* LISTEN
tcp4 0 0 *.993 *.* LISTEN
tcp6 0 0 *.993 *.* LISTEN
tcp4 0 0 *.2084 *.* LISTEN
tcp4 0 0 *.6666 *.* LISTEN
tcp4 0 0 *.2096 *.* LISTEN
tcp4 0 0 *.2087 *.* LISTEN
tcp4 0 0 *.2083 *.* LISTEN
tcp4 0 0 *.80 *.* LISTEN
tcp4 0 0 *.443 *.* LISTEN
tcp4 0 0 *.465 *.* LISTEN
tcp6 0 0 *.465 *.* LISTEN
