SRC_VMARK         100 include/linux/inetdevice.h #define IN_DEV_SRC_VMARK(in_dev)    	IN_DEV_ORCONF((in_dev), SRC_VMARK)
SRC_VMARK        2522 net/ipv4/devinet.c 		DEVINET_SYSCTL_RW_ENTRY(SRC_VMARK, "src_valid_mark"),