diff --git a/source/6LoWPAN/Thread/thread_common.c b/source/6LoWPAN/Thread/thread_common.c
index 1ef5e4e60d9..afd6552f765 100644
--- a/source/6LoWPAN/Thread/thread_common.c
+++ b/source/6LoWPAN/Thread/thread_common.c
@@ -1712,7 +1712,8 @@ uint8_t *thread_address_registration_tlv_write(uint8_t *ptr, protocol_interface_
             // Maximum length of address registrations
             continue;
         }
-        if (addr_ipv6_scope(e->address, cur) == IPV6_SCOPE_GLOBAL) {
+        if (addr_ipv6_scope(e->address, cur) == IPV6_SCOPE_GLOBAL || (addr_ipv6_scope(e->address, cur) == IPV6_SCOPE_REALM_LOCAL
+                && !thread_addr_is_mesh_local_16(e->address, cur))) {
             ctx = lowpan_context_get_by_address(&cur->lowpan_contexts, e->address);
             if (ctx) {
                 //Write TLV to list
@@ -1725,7 +1726,6 @@ uint8_t *thread_address_registration_tlv_write(uint8_t *ptr, protocol_interface_
                 memcpy(ptr, e->address, 16);
                 ptr += 16;
                 *address_len_ptr += 17;
-
             }
         }
     }
diff --git a/source/6LoWPAN/Thread/thread_host_bootstrap.c b/source/6LoWPAN/Thread/thread_host_bootstrap.c
index 9f5e5bd5dc1..4a471c92fe7 100644
--- a/source/6LoWPAN/Thread/thread_host_bootstrap.c
+++ b/source/6LoWPAN/Thread/thread_host_bootstrap.c
@@ -88,7 +88,6 @@ static int thread_parent_request_build(protocol_interface_info_entry_t *cur);
 static int thread_attach_child_id_request_build(protocol_interface_info_entry_t *cur);
 static int thread_end_device_synch_response_validate(protocol_interface_info_entry_t *cur, uint8_t *ptr, uint16_t data_length, uint8_t linkMargin, uint8_t *src_address, mle_security_header_t *securityHeader);
 
-static uint8_t *thread_single_address_registration_tlv_write(uint8_t *ptr, lowpan_context_t *ctx, uint8_t *addressPtr);
 static int8_t thread_end_device_synch_start(protocol_interface_info_entry_t *cur);
 
 
@@ -1028,25 +1027,6 @@ static bool thread_child_id_req_timeout(int8_t interface_id, uint16_t msgId, boo
     return false;
 }
 
-static uint8_t *thread_single_address_registration_tlv_write(uint8_t *ptr, lowpan_context_t *ctx, uint8_t *addressPtr)
-{
-    *ptr++ = MLE_TYPE_ADDRESS_REGISTRATION;
-    if (ctx) {
-        *ptr++ = 9;
-        //Write TLV to list
-        *ptr++ = (ctx->cid | 0x80);
-        memcpy(ptr, addressPtr + 8, 8);
-        ptr += 8;
-    } else {
-        *ptr++ = 17;
-        //Write TLV to list
-        *ptr++ = 0;
-        memcpy(ptr, addressPtr, 16);
-        ptr += 16;
-    }
-    return ptr;
-}
-
 static int thread_attach_child_id_request_build(protocol_interface_info_entry_t *cur)
 {
     uint8_t *ptr, *address_ptr;
@@ -1069,8 +1049,6 @@ static int thread_attach_child_id_request_build(protocol_interface_info_entry_t
     thread_management_get_current_keysequence(cur->id, &keySequence);
     mle_service_msg_update_security_params(buf_id, 5, 2, keySequence);
 
-    lowpan_context_t *ctx;
-    uint8_t ml64[16];
     uint8_t request_tlv_list[3];
     uint8_t macShort[2];
     uint8_t reqTlvCnt;
@@ -1088,15 +1066,10 @@ static int thread_attach_child_id_request_build(protocol_interface_info_entry_t
     ptr = mle_tlv_write_response(ptr, scan_parent->challengeData, scan_parent->chal_len);
 
     //Add ML-EID
-    memcpy(ml64, thread_info(cur)->threadPrivatePrefixInfo.ulaPrefix, 8);
-    memcpy(&ml64[8], cur->iid_slaac, 8);
     if ((mode & MLE_FFD_DEV) == 0) {
-        ctx = lowpan_context_get_by_address(&cur->lowpan_contexts, ml64);
-        if (ctx) {
-            //Write TLV to list
-            ptr = thread_single_address_registration_tlv_write(ptr, ctx, ml64);
-        }
+        ptr = thread_address_registration_tlv_write(ptr, cur);
     }
+
     reqTlvCnt = 2;
     request_tlv_list[0] = MLE_TYPE_NETWORK_DATA;