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sysctl for TCP windows scaling

Is it my imagination, or does net.inet.tcp.win_scale completely fail to switch TCP window scaling on or off? Maybe this isn't what it's for?

Tcpdump says this "13:35:06.520145 IP > S 2496279258:2496279258(0) win 32768 <mss 1478,nop,wscale 3,sackOK,nop,nop,nop,nop,timestamp 1 0>" for the first packet sent, and sysctl says this "net.inet.tcp.win_scale = 0".

Lloyd Parkes
Systems Consultant
Open Systems
Ph: +64 4 890 2437

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