diff --git a/src/include/lwip/stats.h b/src/include/lwip/stats.h
index 1952a039..176723d2 100644
--- a/src/include/lwip/stats.h
+++ b/src/include/lwip/stats.h
@@ -169,16 +169,47 @@ struct stats_mib2 {
 };
 
 struct stats_mib2_netif_ctrs {
+  /* The total number of octets received on the interface, including framing characters */
   u32_t ifinoctets;
+  /* The number of packets, delivered by this sub-layer to a higher (sub-)layer, which were
+   * not addressed to a multicast or broadcast address at this sub-layer */
   u32_t ifinucastpkts;
+  /* The number of packets, delivered by this sub-layer to a higher (sub-)layer, which were 
+   * addressed to a multicast or broadcast address at this sub-layer */
   u32_t ifinnucastpkts;
+  /* The number of inbound packets which were chosen to be discarded even though no errors had 
+   * been detected to prevent their being deliverable to a higher-layer protocol. One possible 
+   * reason for discarding such a packet could be to free up buffer space */
   u32_t ifindiscards;
+  /* For packet-oriented interfaces, the number of inbound packets that contained errors 
+   * preventing them from being deliverable to a higher-layer protocol.  For character-
+   * oriented or fixed-length interfaces, the number of inbound transmission units that 
+   * contained errors preventing them from being deliverable to a higher-layer protocol. */
   u32_t ifinerrors;
+  /* For packet-oriented interfaces, the number of packets received via the interface which
+   * were discarded because of an unknown or unsupported protocol.  For character-oriented
+   * or fixed-length interfaces that support protocol multiplexing the number of transmission
+   * units received via the interface which were discarded because of an unknown or unsupported
+   * protocol. For any interface that does not support protocol multiplexing, this counter will
+   * always be 0 */
   u32_t ifinunknownprotos;
+  /* The total number of octets transmitted out of the interface, including framing characters. */
   u32_t ifoutoctets;
+  /* The total number of packets that higher-level protocols requested be transmitted, and
+   * which were not addressed to a multicast or broadcast address at this sub-layer, including
+   * those that were discarded or not sent. */
   u32_t ifoutucastpkts;
+  /* The total number of packets that higher-level protocols requested be transmitted, and which
+   * were addressed to a multicast or broadcast address at this sub-layer, including
+   * those that were discarded or not sent. */
   u32_t ifoutnucastpkts;
+  /* The number of outbound packets which were chosen to be discarded even though no errors had
+   * been detected to prevent their being transmitted.  One possible reason for discarding
+   * such a packet could be to free up buffer space. */
   u32_t ifoutdiscards;
+  /* For packet-oriented interfaces, the number of outbound packets that could not be transmitted
+   * because of errors. For character-oriented or fixed-length interfaces, the number of outbound
+   * transmission units that could not be transmitted because of errors. */
   u32_t ifouterrors;
 };