Title: ip_nettype()


ip_nettype(ipaddr) returns the network type (which will be of type nettype_t) of ipaddr, the only parameter to ip_nettype().

The nettype_t enum typedef is declared in inet/generic/ip_int.h. Each type's associated ip address range is included in the comments.

 typedef enum nettype

 {

          IPNT_ZERO,                 /* 0.xx.xx.xx */

          IPNT_CLASS_A,              /* 1.xx.xx.xx .. 126.xx.xx.xx */

          IPNT_LOCAL,                /* 127.xx.xx.xx */

          IPNT_CLASS_B,              /* 128.xx.xx.xx .. 191.xx.xx.xx */

          IPNT_CLASS_C,              /* 192.xx.xx.xx .. 223.xx.xx.xx */

          IPNT_CLASS_D,              /* 224.xx.xx.xx .. 239.xx.xx.xx */

          IPNT_CLASS_E,              /* 240.xx.xx.xx .. 247.xx.xx.xx */

          IPNT_MARTIAN,              /* 248.xx.xx.xx .. 254.xx.xx.xx +  */

          IPNT_BROADCAST             /* 255.255.255.255 */

 } nettype_t;