Solaris doesn't have an easy way to retrieve the MAC address of the client

that is soliciting the DHCPv6 IP address. This fix uses a simple way to

retrieve the client MAC address from the client's EUI64 link-local address.

*** dnsmasq-2.68/src/dhcp6.c	2013-12-08 07:58:29.000000000 -0800

--- NEW/src/dhcp6.c	2015-02-23 18:33:30.937299563 -0800

***************

*** 231,236 ****

--- 231,253 ----

  void get_client_mac(struct in6_addr *client, int iface, unsigned char *mac, unsigned int *maclenp, unsigned int *mactypep)

  {

+ #ifdef HAVE_SOLARIS_NETWORK

+ /* Solaris does not have an easy way to retrieve MAC address for a given IPv6 address from the kernel.

+    For now the following workaround should work for OpenStack's needs. */

+   uint8_t *addr6;

+ 

+   *maclenp = ETHER_ADDR_LEN;

+   *mactypep = ARPHRD_ETHER;

+   /* Take the EUI64 based client's link-local address and convert it to client's MAC address.

+      For example: from fe80::f816:3eff:fe5c:df43 link-local address we arrive at fa:16:3e:5c:df:43 */

+   addr6 = client->s6_addr;

+   mac[0] = addr6[8] ^ 0x2;

+   mac[1] = addr6[9];

+   mac[2] = addr6[10];

+   mac[3] = addr6[13];

+   mac[4] = addr6[14];

+   mac[5]= addr6[15];

+ #else

    /* Recieving a packet from a host does not populate the neighbour

       cache, so we send a neighbour discovery request if we can't 

       find the sender. Repeat a few times in case of packet loss. */

***************

*** 276,281 ****

--- 293,299 ----

    *maclenp = mac_param.maclen;

    *mactypep = ARPHRD_ETHER;

+ #endif /* HAVE_SOLARIS_NETWORK */

  }

  static int find_mac(int family, char *addrp, char *mac, size_t maclen, void *parmv)