Andrew Boyson / net

A stack which works with or without an Mbed os library. Provides IPv4 or IPv6 with a full 1500 byte buffer.

Dependents:   oldheating gps motorhome heating

Diff: udp/dhcp.cpp

Revision:
28:edc17eeb4142
Parent:
14:e75a59c1123d
Child:
29:39277bf2003d
diff -r 1d9a3d72b6dd -r edc17eeb4142 udp/dhcp.cpp
--- a/udp/dhcp.cpp	Wed Jul 05 13:46:04 2017 +0000
+++ b/udp/dhcp.cpp	Mon Jul 24 15:27:36 2017 +0000
@@ -235,11 +235,12 @@
     uint32_t siaddr  = pHeader->siaddr;
     uint32_t cookie  = NetToHost32(pHeader->cookie);
         
-    if (op     != REPLY)    return DO_NOTHING;
-    if (htype  != ETHERNET) return DO_NOTHING;
-    if (hlen   != 6)        return DO_NOTHING;
-    if (xid    != ID)       return DO_NOTHING;
-    if (cookie != COOKIE)   return DO_NOTHING;
+    if (op     != REPLY)                      return DO_NOTHING;
+    if (htype  != ETHERNET)                   return DO_NOTHING;
+    if (hlen   != 6)                          return DO_NOTHING;
+    if (memcmp(pHeader->chaddr, MacLocal, 6)) return DO_NOTHING;
+    if (xid    != ID)                         return DO_NOTHING;
+    if (cookie != COOKIE)                     return DO_NOTHING;
     
     char* pOptions = (char*)pPacket + HEADER_LENGTH;
     readOptions(*pSize - HEADER_LENGTH, pOptions);