tag	line	file	source code
AF_UNSPEC	55	include/linux/socket.h	#define PF_UNSPEC  AF_UNSPEC
AF_UNSPEC	1204	net/core/dev.c	if(ifr.ifr_hwaddr.sa_family!=AF_UNSPEC)
AF_UNSPEC	1212	net/core/dev.c	if(ifr.ifr_hwaddr.sa_family!=AF_UNSPEC)