diff -r 3591c18acabc ipv4/control.go
--- a/ipv4/control.go	Wed Aug 07 12:55:39 2013 +1000
+++ b/ipv4/control.go	Fri Aug 09 00:40:54 2013 +1000
@@ -40,6 +40,7 @@
 	//
 	TTL     int    // time-to-live, receiving only
 	Src     net.IP // source address, specifying only
+	SpecDst net.IP // local address of packet
 	Dst     net.IP // destination address, receiving only
 	IfIndex int    // interface index, must be 1 <= value when specifying
 }
@@ -48,5 +49,5 @@
 	if cm == nil {
 		return "<nil>"
 	}
-	return fmt.Sprintf("ttl: %v, src: %v, dst: %v, ifindex: %v", cm.TTL, cm.Src, cm.Dst, cm.IfIndex)
+	return fmt.Sprintf("ttl: %v, src: %v, specdst: %v, dst: %v, ifindex: %v", cm.TTL, cm.Src, cm.SpecDst, cm.Dst, cm.IfIndex)
 }
diff -r 3591c18acabc ipv4/control_linux.go
--- a/ipv4/control_linux.go	Wed Aug 07 12:55:39 2013 +1000
+++ b/ipv4/control_linux.go	Fri Aug 09 00:40:54 2013 +1000
@@ -89,6 +89,7 @@
 		case syscall.IP_PKTINFO:
 			pi := (*syscall.Inet4Pktinfo)(unsafe.Pointer(&m.Data[0]))
 			cm.IfIndex = int(pi.Ifindex)
+			cm.SpecDst = pi.Spec_dst[:]
 			cm.Dst = pi.Addr[:]
 		}
 	}