tag	line	file	source code
UdpInDatagrams	100	include/net/snmp.h	unsigned long  UdpInDatagrams;
UdpInDatagrams	253	net/ipv4/proc.c	udp_statistics.UdpInDatagrams, udp_statistics.UdpNoPorts,
UdpInDatagrams	751	net/ipv4/udp.c	udp_statistics.UdpInDatagrams++;