X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Flibsystemd-network%2Fdhcp-protocol.h;h=abca9422c5c1281d3f4f53b1326c7c786c88a287;hb=c1ff5570f4a04bb9aedea444c12dce81679224ec;hp=f5119a7a58e164e5eb65ce4a9f11514a82e83028;hpb=615c1467c81411bf1d19fd7092e8995b5ebadc13;p=elogind.git

diff --git a/src/libsystemd-network/dhcp-protocol.h b/src/libsystemd-network/dhcp-protocol.h
index f5119a7a5..abca9422c 100644
--- a/src/libsystemd-network/dhcp-protocol.h
+++ b/src/libsystemd-network/dhcp-protocol.h
@@ -60,7 +60,8 @@ typedef struct DHCPPacket DHCPPacket;
 #define DHCP_IP_SIZE            (int32_t)(sizeof(struct iphdr))
 #define DHCP_IP_UDP_SIZE        (int32_t)(sizeof(struct udphdr) + DHCP_IP_SIZE)
 #define DHCP_MESSAGE_SIZE       (int32_t)(sizeof(DHCPMessage))
-#define DHCP_MIN_OPTIONS_SIZE   308 /* spec says 312, but that includes the magic cookie */
+#define DHCP_DEFAULT_MIN_SIZE   576 /* the minimum internet hosts must be able to receive */
+#define DHCP_MIN_OPTIONS_SIZE   DHCP_DEFAULT_MIN_SIZE - DHCP_IP_UDP_SIZE - DHCP_MESSAGE_SIZE
 #define DHCP_MAGIC_COOKIE       (uint32_t)(0x63825363)
 
 enum {