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why --tcp option failed? should i install some package? if yes, which package i should install?

this question is not the same as http://stackoverflow.com/questions/10475991/tcp-sockets-double-messages

dstat --tcp
Module tcp has problems. (Cannot open file /proc/net/tcp6.)
None of the stats you selected are available.

what is the problem with module tcp, how to find the problem?

what i should do in order to fix this issue?

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Which distro are you running? –  quanta Sep 7 '12 at 15:43
Does /proc/net/tcp6 exist? –  quanta Sep 7 '12 at 16:12

1 Answer 1

You have no necessity to install any additional packages. Everything should work fine. Thus check whether files /proc/net/tcp6, /proc/net/tcp exist. If they are absent, just add them.

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