Munin bandwdith graph for em1 not showing

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http://forums.cpanel.net – Hello, Since the network device naming on Centos 6 is changed from ethX to emX the munin plugin doesn't show em1 bandwidth/traffic usage graph. I have tried to see on configuration files in /etc/munin but can't find any clue on which file/plugin/config which read the bandwidth. Can some one give me pointers? CPanel version: 11.32.4 Munin version: 1.4.7 OS: Centos 6 64-Bit (HowTos)