<p><b>@miri64</b> commented on this pull request.</p>

<hr>

<p>In <a href="https://github.com/RIOT-OS/RIOT/pull/10951#discussion_r323431817">sys/net/gnrc/network_layer/ipv6/nib/nib_abr.c</a>:</p>
<pre style='color:#555'>> +            entry->version = abr->version;
+            entry->valid_until = abr->valid_until;
+            break;
+        }
+    }
+    mutex_unlock(&_nib_mutex);
+    *state = abr;
+    return (*state != NULL);
+}
+
+void gnrc_ipv6_nib_abr_print(gnrc_ipv6_nib_abr_t *abr)
+{
+    char addr_str[IPV6_ADDR_MAX_STR_LEN];
+    uint32_t now = _now_min();
+
+    printf("%s v%" PRIu32 " expires %" PRIu32 "min\n",
</pre>
<p>Matter of taste + the other print functions in <code>gnrc_ipv6_nib</code> use the same formatting.</p>
<p>See e.g.</p>
<p><a href="https://github.com/RIOT-OS/RIOT/blob/729ba07e9acb4c84a411f3da1ba034a8cd125317/sys/net/gnrc/network_layer/ipv6/nib/nib_pl.c#L151-L156">https://github.com/RIOT-OS/RIOT/blob/729ba07e9acb4c84a411f3da1ba034a8cd125317/sys/net/gnrc/network_layer/ipv6/nib/nib_pl.c#L151-L156</a></p>
<p>If you want it to be changed, I gladly ACK a follow-up of your's that changes all of them :-></p>

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