#include <stdio.h>

#define MAX_NUM_TAGGED_VLAN 10

struct vlan_description {
        int notempty; /* 0 : no vlan information present, 1: else */
        int untagged; /* >0 802.1q vid */
        int tagged[MAX_NUM_TAGGED_VLAN]; /* first k items, ascending order */
};


int main() {
        struct vlan_description v;
        void * vp = &v;
        int * vt = v.tagged;
        int * vtt = &v.tagged;

        int x = (long long) vt - (long long) vp;
        printf("%p %p %p\n",vp, vt, vtt);

        return 0;
}