HI all,

I am writing simple dhcpv6 client. I gone through the rfc of dhcp and ipv6 and understand basic. With the understanding i started to implement SOLICIT request option.
I have created a packet with the below structure.

struct udp_dhcp6_packet {

struct ip6_hdr ip;

struct udphdr udp;

struct dhcp6_Message data;

} PACKED;

In the above structure i am able to assign the value for udp and data(i.e struct udphdr, struct dhcp6_Message). But i could not able to set the value for ip. Below is the structure of ip6_hdr.

struct ip6_hdr
{
union {

        struct ip6_hdrctl
          {
        uint32_t ip6_un1_flow;   /* 4 bits version, 8 bits TC,
                                        20 bits flow-ID */
            uint16_t ip6_un1_plen;   /* payload length */
            uint8_t ip6_un1_nxt;    /* next header */
            uint8_t ip6_un1_hlim;   /* hop limit */
          } ip6_un1;
        uint8_t ip6_un2_vfc;       /* 4 bits version, top 4 bits tclass */
      } ip6_ctlun;
    struct in6_addr ip6_src;      /* source address */
    struct in6_addr ip6_dst;      /* destination address */
};

I want to set the ip6_dst value as ff02::1:2 and the ip6_src address as fe80::220:4aff:fea8:8e4a and remaining options. But i dont have any idea how to set these values. I googled many times and not able to get the idea to creat ipv6 header.

Kindly help me to solve my problem?

Note :

I don't know whether this is right place to ask this question . If i am wrong , i am sorry.

Thanks in advance ,

Prabhu