LINUX_MIB_TCPMTUPFAIL  283 net/ipv4/proc.c 	SNMP_MIB_ITEM("TCPMTUPFail", LINUX_MIB_TCPMTUPFAIL),
LINUX_MIB_TCPMTUPFAIL 2572 net/ipv4/tcp_input.c 	NET_INC_STATS(sock_net(sk), LINUX_MIB_TCPMTUPFAIL);