components/network/dnsmasq/patches/03_client_mac.patch

   1 Solaris doesn't have an easy way to retrieve the MAC address of the client
   2 that is soliciting the DHCPv6 IP address. This fix uses a simple way to
   3 retrieve the client MAC address from the client's EUI64 link-local address.
   4
   5 diff --git a/src/dhcp6.c b/src/dhcp6.c
   6 index 9901e1b..49a092b 100644
   7 --- a/src/dhcp6.c
   8 +++ b/src/dhcp6.c
   9 @@ -261,6 +261,23 @@ void dhcp6_packet(time_t now)
  10
  11  void get_client_mac(struct in6_addr *client, int iface, unsigned char *mac, unsigned int *maclenp, unsigned int *mactypep, time_t now)
  12  {
  13 +#ifdef HAVE_SOLARIS_NETWORK
  14 +/* Solaris does not have an easy way to retrieve MAC address for a given IPv6 address from the kernel.
  15 +   For now the following workaround should work for OpenStack's needs. */
  16 +  uint8_t *addr6;
  17 +
  18 +  *maclenp = ETHER_ADDR_LEN;
  19 +  *mactypep = ARPHRD_ETHER;
  20 +  /* Take the EUI64 based client's link-local address and convert it to client's MAC address.
  21 +     For example: from fe80::f816:3eff:fe5c:df43 link-local address we arrive at fa:16:3e:5c:df:43 */
  22 +  addr6 = client->s6_addr;
  23 +  mac[0] = addr6[8] ^ 0x2;
  24 +  mac[1] = addr6[9];
  25 +  mac[2] = addr6[10];
  26 +  mac[3] = addr6[13];
  27 +  mac[4] = addr6[14];
  28 +  mac[5]= addr6[15];
  29 +#else
  30    /* Receiving a packet from a host does not populate the neighbour
  31       cache, so we send a neighbour discovery request if we can't
  32       find the sender. Repeat a few times in case of packet loss. */
  33 @@ -301,6 +318,7 @@ void get_client_mac(struct in6_addr *client, int iface, unsigned char *mac, unsi
  34
  35    *maclenp = maclen;
  36    *mactypep = ARPHRD_ETHER;
  37 +#endif /* HAVE_SOLARIS_NETWORK */
  38  }
  39
  40  static int complete_context6(struct in6_addr *local,  int prefix,