struct interface

struct interface {
        char name[IF_NAMESIZE];
        struct if_state *state;

        int flags;
        sa_family_t family;
        unsigned char hwaddr[HWADDR_LEN];
        size_t hwlen;
        int metric;
        int carrier;
        int wireless;
        char ssid[IF_SSIDSIZE];

        int raw_fd;
        int udp_fd;
        int arp_fd;
        size_t buffer_size, buffer_len, buffer_pos;
        unsigned char *buffer;

        struct in_addr addr;
        struct in_addr net;
        struct in_addr dst;

        char leasefile[PATH_MAX];
        time_t start_uptime;

        unsigned char *clientid;

        struct interface *next;
};