Merge 6227919bc2 into 9ce27f363e

src/Cedar/Virtual.c

@@ -9709,6 +9709,9 @@ void VirtualDhcpServer(VH *v, PKT *p)
 			}
 		}
 		else
+		{
+			// Reply of DHCP_REQUEST must be either DHCP_ACK or DHCP_NAK.
+			if (opt->Opcode == DHCP_REQUEST)
 			{
 				// There is no IP address that can be provided
 				DHCP_OPTION_LIST ret;
@@ -9743,6 +9746,7 @@ void VirtualDhcpServer(VH *v, PKT *p)
 				}
 			}
 		}
+	}
 
 	// Release the memory
 	Free(opt);