dnsmasq: Fix DHCP no address on interface warning (#10570)

SVN-Revision: 32781

package/dnsmasq/patches/100-fix-dhcp-no-address-warning.patch

@@ -0,0 +1,49 @@
+--- a/src/dhcp.c
++++ b/src/dhcp.c
+@@ -134,7 +134,7 @@ void dhcp_packet(time_t now, int pxe_fd)
+   struct iovec iov;
+   ssize_t sz; 
+   int iface_index = 0, unicast_dest = 0, is_inform = 0;
+-  struct in_addr iface_addr;
++  struct in_addr iface_addr, *addrp = NULL;
+   struct iface_param parm;
+ #ifdef HAVE_LINUX_NETWORK
+   struct arpreq arp_req;
+@@ -246,11 +246,9 @@ void dhcp_packet(time_t now, int pxe_fd)
+   
+   ifr.ifr_addr.sa_family = AF_INET;
+   if (ioctl(daemon->dhcpfd, SIOCGIFADDR, &ifr) != -1 )
+-    iface_addr = ((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr;
+-  else
+     {
+-      my_syslog(MS_DHCP | LOG_WARNING, _("DHCP packet received on %s which has no address"), ifr.ifr_name);
+-      return;
++      addrp = &iface_addr;
++      iface_addr = ((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr;
+     }
+   
+   for (tmp = daemon->dhcp_except; tmp; tmp = tmp->next)
+@@ -272,7 +270,7 @@ void dhcp_packet(time_t now, int pxe_fd)
+   parm.current = NULL;
+   parm.ind = iface_index;
+ 
+-  if (!iface_check(AF_INET, (struct all_addr *)&iface_addr, ifr.ifr_name))
++  if (!iface_check(AF_INET, (struct all_addr *)addrp, ifr.ifr_name))
+     {
+       /* If we failed to match the primary address of the interface, see if we've got a --listen-address
+ 	 for a secondary */
+@@ -291,7 +289,13 @@ void dhcp_packet(time_t now, int pxe_fd)
+ 	 there is more than one address on the interface in the same subnet */
+       complete_context(match.addr, iface_index, match.netmask, match.broadcast, &parm);
+     }    
+-      
++
++  if (!addrp)
++    {
++      my_syslog(MS_DHCP | LOG_WARNING, _("DHCP packet received on %s which has no address"), ifr.ifr_name);
++      return;
++    }
++
+   if (!iface_enumerate(AF_INET, &parm, complete_context))
+     return;
+