This struct is a typedef of _cidrnode_ipv4. It is defined as follows:
struct _cidrnode_ipv4 {
int threadsafe;
ck_spinlock_t lock;
u_int8_t type;
u_int32_t mask;
u_int32_t base; /* IP address _NOT_ struct in_addr as it is in host format */
u_int32_t size;
struct _cidrnode_ipv4 *low;
struct _cidrnode_ipv4 *high;
};
To use this struct, include the file cidrtree.h.
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