Why 'dstat' command is not showing TCP and UDP statistics when used with --tcp --udp options ?

Solution Verified - Updated -

Issue

  • dstat is not showing TCP and UDP stats when used with the --tcp --udp options.
# dstat --time --tcp --udp
Module tcp has problems. (Cannot open file /proc/net/tcp6.)
Module udp has problems. (Cannot open file /proc/net/udp6.)
-----time-----
  date/time   
01-08 11:20:41
01-08 11:20:42
01-08 11:20:43
01-08 11:20:44

Environment

  • Red Hat Enterprise Linux 5.9
  • dstat-0.6.6-5.el5

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