I don't see specifically what this has to do with Splunk, but my netstat -su produces similar output to yours. The answer is quite simple:
$ sudo cat /proc/net/snmp | grep -i udp
Udp: InDatagrams NoPorts InErrors OutDatagrams
Udp: 13451987 2317 0 14525121
Conclusion - the kernel is not recording the error counts. If it was, the first line of output would be:
Udp: InDatagrams NoPorts InErrors OutDatagrams RcvbufErrors SndbufErrors
Hmmm - actually, let me amend that. I have one kernel here which is counting them, but netstat is not reporting them. Perhaps this is because they currently stand at zero. Or perhaps it is simply we neither of us have a recent enough version of netstat:
$ netstat -V
net-tools 1.60
netstat 1.42 (2001-04-15)
Fred Baumgarten, Alan Cox, Bernd Eckenfels, Phil Blundell, Tuan Hoang and others
+NEW_ADDRT +RTF_IRTT +RTF_REJECT +FW_MASQUERADE +I18N
AF: (inet) +UNIX +INET +INET6 +IPX +AX25 +NETROM +X25 +ATALK +ECONET +ROSE
HW: +ETHER +ARC +SLIP +PPP +TUNNEL +TR +AX25 +NETROM +X25 +FR +ROSE +ASH +SIT +FDDI +HIPPI +HDLC/LAPB +EUI64
I can't seem to find a definitive answer as to whether the support needs to be compiled into netstat, whether the version is simply not current enough, or whether it simply does not report zero values. What version to you have for an example that works? I presume you have seen a working example or you would not be asking the question.
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