Disabled BR IID verify from DODAG ID

Nodes no longer verify BR IID (EAPOL Authenticator EUI-64) from DODAG ID
because it causes interworking issues with DODAG IDs which are not
generated using BR EUI-64.

Author: Mika Leppänen

CHANGELOG.md

@@ -15,6 +15,7 @@
 * Use all allowed channels with Brazil domain
 * Fixed issues related to channel change failures and bad MAC retransmission timings causing heavily decreasing performance on devices.
 * Corrected memory leak on Border Router key storage that could occur when key storage is allocated on low memory situation
+* Nodes no longer verify BR IID (EAPOL Authenticator EUI-64) from DODAG ID because it causes interworking issues with DODAG IDs which are not generated using EUI-64.
 
 ## Release v12.7.0 (14-12-2020)
 

source/6LoWPAN/ws/ws_pae_supp.c

@@ -269,31 +269,15 @@ int8_t ws_pae_supp_border_router_addr_read(protocol_interface_info_entry_t *inte
 
 int8_t ws_pae_supp_nw_key_valid(protocol_interface_info_entry_t *interface_ptr, uint8_t *br_iid)
 {
+    (void) br_iid;
+
     pae_supp_t *pae_supp = ws_pae_supp_get(interface_ptr);
     if (!pae_supp) {
         return -1;
     }
 
     tr_info("NW key valid indication");
 
-    // Store border router EUI-64 received on bootstrap complete
-    memcpy(pae_supp->comp_br_eui_64, br_iid, 8);
-    pae_supp->comp_br_eui_64[0] ^= 0x02;
-    pae_supp->comp_br_eui_64_set = true;
-
-    // Get the EUI-64 used on 4WH handshake PTK generation
-    uint8_t *ptk_eui_64 = sec_prot_keys_ptk_eui_64_get(&pae_supp->entry.sec_keys);
-
-    /* If border router EUI-64 received on bootstrap complete does not match to
-       EUI-64 stored with keys, delete keys */
-    if (!ptk_eui_64 || memcmp(ptk_eui_64, pae_supp->comp_br_eui_64, 8) != 0) {
-        tr_warn("Delete keys: PTK EUI-64 %s does not match to BR EUI-64 %s",
-                ptk_eui_64 ? tr_array(ptk_eui_64, 8) : "", tr_array(pae_supp->comp_br_eui_64, 8));
-        sec_prot_keys_pmk_delete(&pae_supp->entry.sec_keys);
-        sec_prot_keys_ptk_delete(&pae_supp->entry.sec_keys);
-        sec_prot_keys_ptk_eui_64_delete(&pae_supp->entry.sec_keys);
-    }
-
     // Stored keys are valid
     pae_supp->nw_keys_used_cnt = 0;