why dstat failed with --tcp option?

Posted by hugemeow on Server Fault See other posts from Server Fault or by hugemeow
Published on 2012-09-07T15:36:00Z Indexed on 2012/09/07 15:39 UTC
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linux

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tcp

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IPv6

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performance-monitoring

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status

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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