diff --git a/sys/include/net/gnrc/ipv6/nib/abr.h b/sys/include/net/gnrc/ipv6/nib/abr.h
index 18345b8ac7..4474fcc417 100644
--- a/sys/include/net/gnrc/ipv6/nib/abr.h
+++ b/sys/include/net/gnrc/ipv6/nib/abr.h
@@ -21,6 +21,8 @@
 #ifndef NET_GNRC_IPV6_NIB_ABR_H
 #define NET_GNRC_IPV6_NIB_ABR_H
 
+#include <kernel_defines.h>
+
 #include "net/ipv6/addr.h"
 #include "net/gnrc/ipv6/nib/conf.h"
 
@@ -39,7 +41,7 @@ typedef struct {
 } gnrc_ipv6_nib_abr_t;
 
 #if GNRC_IPV6_NIB_CONF_MULTIHOP_P6C || defined(DOXYGEN)
-#if GNRC_IPV6_NIB_CONF_6LBR || defined(DOXYGEN)
+#if IS_ACTIVE(CONFIG_GNRC_IPV6_NIB_6LBR) || defined(DOXYGEN)
 /**
  * @brief   Adds the address of an authoritative border router to the NIB
  *
@@ -47,7 +49,7 @@ typedef struct {
  *
  * @return  0 on success.
  * @return  -ENOMEM, if no space is left in the neighbor cache.
- * @return  -ENOTSUP, if @ref GNRC_IPV6_NIB_CONF_6LBR or
+ * @return  -ENOTSUP, if @ref CONFIG_GNRC_IPV6_NIB_6LBR or
  *          @ref GNRC_IPV6_NIB_CONF_MULTIHOP_P6C is not defined
  */
 int gnrc_ipv6_nib_abr_add(const ipv6_addr_t *addr);
@@ -58,10 +60,10 @@ int gnrc_ipv6_nib_abr_add(const ipv6_addr_t *addr);
  * @param[in] addr  The address of an authoritative border router.
  */
 void gnrc_ipv6_nib_abr_del(const ipv6_addr_t *addr);
-#else   /* GNRC_IPV6_NIB_CONF_6LBR || defined(DOXYGEN) */
+#else   /* CONFIG_GNRC_IPV6_NIB_6LBR || defined(DOXYGEN) */
 #define gnrc_ipv6_nib_abr_add(addr)     (-ENOTSUP)
 #define gnrc_ipv6_nib_abr_del(addr)     (void)(addr)
-#endif  /* GNRC_IPV6_NIB_CONF_6LBR || defined(DOXYGEN) */
+#endif  /* CONFIG_GNRC_IPV6_NIB_6LBR || defined(DOXYGEN) */
 
 /**
  * @brief   Iterates over all authoritative border router in the NIB
diff --git a/sys/include/net/gnrc/ipv6/nib/conf.h b/sys/include/net/gnrc/ipv6/nib/conf.h
index 724222a21f..e8efb2b307 100644
--- a/sys/include/net/gnrc/ipv6/nib/conf.h
+++ b/sys/include/net/gnrc/ipv6/nib/conf.h
@@ -21,14 +21,16 @@
 #ifndef NET_GNRC_IPV6_NIB_CONF_H
 #define NET_GNRC_IPV6_NIB_CONF_H
 
+#include <kernel_defines.h>
+
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 /* some pseudo-module based configuration, doc: see below */
 #ifdef MODULE_GNRC_IPV6_NIB_6LBR
-#ifndef GNRC_IPV6_NIB_CONF_6LBR
-#define GNRC_IPV6_NIB_CONF_6LBR         1
+#ifndef CONFIG_GNRC_IPV6_NIB_6LBR
+#define CONFIG_GNRC_IPV6_NIB_6LBR      1
 #endif
 #ifndef GNRC_IPV6_NIB_CONF_SLAAC
 #define GNRC_IPV6_NIB_CONF_SLAAC        1
@@ -84,15 +86,15 @@ extern "C" {
 /**
  * @brief   enable features for 6Lo border router
  */
-#ifndef GNRC_IPV6_NIB_CONF_6LBR
-#define GNRC_IPV6_NIB_CONF_6LBR         0
+#ifndef CONFIG_GNRC_IPV6_NIB_6LBR
+#define CONFIG_GNRC_IPV6_NIB_6LBR         0
 #endif
 
 /**
  * @brief    enable features for 6Lo router
  */
 #ifndef GNRC_IPV6_NIB_CONF_6LR
-#if GNRC_IPV6_NIB_CONF_6LBR
+#if CONFIG_GNRC_IPV6_NIB_6LBR
 #define GNRC_IPV6_NIB_CONF_6LR          1
 #else
 #define GNRC_IPV6_NIB_CONF_6LR          0
@@ -126,7 +128,7 @@ extern "C" {
  */
 #ifndef GNRC_IPV6_NIB_CONF_ADV_ROUTER
 #if GNRC_IPV6_NIB_CONF_ROUTER && \
-    (!GNRC_IPV6_NIB_CONF_6LR || GNRC_IPV6_NIB_CONF_6LBR)
+    (!GNRC_IPV6_NIB_CONF_6LR || CONFIG_GNRC_IPV6_NIB_6LBR)
 #define GNRC_IPV6_NIB_CONF_ADV_ROUTER   1
 #else
 #define GNRC_IPV6_NIB_CONF_ADV_ROUTER   0
diff --git a/sys/include/net/gnrc/netif/internal.h b/sys/include/net/gnrc/netif/internal.h
index 9e22439214..700e57f011 100644
--- a/sys/include/net/gnrc/netif/internal.h
+++ b/sys/include/net/gnrc/netif/internal.h
@@ -21,6 +21,8 @@
 #ifndef NET_GNRC_NETIF_INTERNAL_H
 #define NET_GNRC_NETIF_INTERNAL_H
 
+#include <kernel_defines.h>
+
 #include "net/gnrc/netif.h"
 #include "net/l2util.h"
 #include "net/netopt.h"
@@ -430,7 +432,7 @@ static inline bool gnrc_netif_is_6lr(const gnrc_netif_t *netif)
  *          according to RFC 6775
  *
  * @attention   Requires prior locking
- * @note        Assumed to be false, when @ref GNRC_IPV6_NIB_CONF_6LBR == 0.
+ * @note        Assumed to be false, when @ref CONFIG_GNRC_IPV6_NIB_6LBR == 0.
  *
  * @param[in] netif the network interface
  *
@@ -441,7 +443,7 @@ static inline bool gnrc_netif_is_6lr(const gnrc_netif_t *netif)
  */
 static inline bool gnrc_netif_is_6lbr(const gnrc_netif_t *netif)
 {
-    if (IS_ACTIVE(GNRC_IPV6_NIB_CONF_6LBR)) {
+    if (IS_ACTIVE(CONFIG_GNRC_IPV6_NIB_6LBR)) {
         return (netif->flags & GNRC_NETIF_FLAGS_6LO_ABR) &&
                gnrc_netif_is_6lr(netif);
     }
diff --git a/sys/net/gnrc/application_layer/dhcpv6/client.c b/sys/net/gnrc/application_layer/dhcpv6/client.c
index 1a49ee9433..80b7f23e69 100644
--- a/sys/net/gnrc/application_layer/dhcpv6/client.c
+++ b/sys/net/gnrc/application_layer/dhcpv6/client.c
@@ -148,7 +148,7 @@ void dhcpv6_client_conf_prefix(unsigned iface, const ipv6_addr_t *pfx,
         }
         gnrc_ipv6_nib_pl_set(netif->pid, pfx, pfx_len, valid, pref);
         if (IS_USED(MODULE_GNRC_IPV6_NIB) &&
-            GNRC_IPV6_NIB_CONF_6LBR &&
+            IS_ACTIVE(CONFIG_GNRC_IPV6_NIB_6LBR) &&
             GNRC_IPV6_NIB_CONF_MULTIHOP_P6C &&
             gnrc_netif_is_6ln(netif)) {
             if (IS_USED(MODULE_GNRC_SIXLOWPAN_CTX)) {
diff --git a/sys/net/gnrc/application_layer/uhcpc/gnrc_uhcpc.c b/sys/net/gnrc/application_layer/uhcpc/gnrc_uhcpc.c
index 5f6bbc9e00..678b90def1 100644
--- a/sys/net/gnrc/application_layer/uhcpc/gnrc_uhcpc.c
+++ b/sys/net/gnrc/application_layer/uhcpc/gnrc_uhcpc.c
@@ -6,6 +6,8 @@
  * directory for more details.
  */
 
+#include <kernel_defines.h>
+
 #include "net/gnrc/ipv6/nib.h"
 #include "net/gnrc/ipv6.h"
 #include "net/gnrc/netapi.h"
@@ -151,7 +153,7 @@ void uhcp_handle_prefix(uint8_t *prefix, uint8_t prefix_len, uint16_t lifetime,
     else if (!ipv6_addr_is_unspecified(&_prefix)) {
         gnrc_netapi_set(gnrc_wireless_interface, NETOPT_IPV6_ADDR_REMOVE, 0,
                         &_prefix, sizeof(_prefix));
-#if defined(MODULE_GNRC_IPV6_NIB) && GNRC_IPV6_NIB_CONF_6LBR && \
+#if defined(MODULE_GNRC_IPV6_NIB) && IS_ACTIVE(CONFIG_GNRC_IPV6_NIB_6LBR) && \
     GNRC_IPV6_NIB_CONF_MULTIHOP_P6C
         gnrc_ipv6_nib_abr_del(&_prefix);
 #endif
@@ -171,7 +173,7 @@ void uhcp_handle_prefix(uint8_t *prefix, uint8_t prefix_len, uint16_t lifetime,
          * list */
         _update_6ctx((ipv6_addr_t *)prefix, prefix_len);
 #endif
-#if defined(MODULE_GNRC_IPV6_NIB) && GNRC_IPV6_NIB_CONF_6LBR && \
+#if defined(MODULE_GNRC_IPV6_NIB) && IS_ACTIVE(CONFIG_GNRC_IPV6_NIB_6LBR) && \
         GNRC_IPV6_NIB_CONF_MULTIHOP_P6C
         gnrc_ipv6_nib_abr_add((ipv6_addr_t *)prefix);
 #endif
diff --git a/sys/net/gnrc/network_layer/ipv6/nib/_nib-router.h b/sys/net/gnrc/network_layer/ipv6/nib/_nib-router.h
index aa6c0753c8..4f29fc47dd 100644
--- a/sys/net/gnrc/network_layer/ipv6/nib/_nib-router.h
+++ b/sys/net/gnrc/network_layer/ipv6/nib/_nib-router.h
@@ -19,6 +19,8 @@
 #ifndef PRIV_NIB_ROUTER_H
 #define PRIV_NIB_ROUTER_H
 
+#include <kernel_defines.h>
+
 #include "net/gnrc/ipv6/nib/conf.h"
 #include "net/gnrc/netif/internal.h"
 #include "net/gnrc/netif/ipv6.h"
@@ -43,12 +45,12 @@ static inline void _init_iface_router(gnrc_netif_t *netif)
     netif->ipv6.last_ra = UINT32_MAX;
     netif->ipv6.ra_sent = 0;
     netif->flags |= GNRC_NETIF_FLAGS_IPV6_FORWARDING;
-#if !GNRC_IPV6_NIB_CONF_6LR || GNRC_IPV6_NIB_CONF_6LBR
+#if !GNRC_IPV6_NIB_CONF_6LR || IS_ACTIVE(CONFIG_GNRC_IPV6_NIB_6LBR)
     netif->flags |= GNRC_NETIF_FLAGS_IPV6_RTR_ADV;
-#endif  /* !GNRC_IPV6_NIB_CONF_6LR || GNRC_IPV6_NIB_CONF_6LBR */
-#if GNRC_IPV6_NIB_CONF_6LBR
+#endif  /* !GNRC_IPV6_NIB_CONF_6LR || CONFIG_GNRC_IPV6_NIB_6LBR */
+#if IS_ACTIVE(CONFIG_GNRC_IPV6_NIB_6LBR)
     netif->flags |= GNRC_NETIF_FLAGS_6LO_ABR;
-#endif  /* GNRC_IPV6_NIB_CONF_6LBR */
+#endif  /* CONFIG_GNRC_IPV6_NIB_6LBR */
     gnrc_netif_ipv6_group_join_internal(netif, &ipv6_addr_all_routers_link_local);
 }
 
diff --git a/sys/net/gnrc/network_layer/ipv6/nib/nib.c b/sys/net/gnrc/network_layer/ipv6/nib/nib.c
index 2c77559df4..551de7c23b 100644
--- a/sys/net/gnrc/network_layer/ipv6/nib/nib.c
+++ b/sys/net/gnrc/network_layer/ipv6/nib/nib.c
@@ -15,6 +15,7 @@
 
 #include <errno.h>
 #include <stdbool.h>
+#include <kernel_defines.h>
 
 #include "log.h"
 #include "net/ipv6/addr.h"
@@ -637,13 +638,13 @@ static void _handle_rtr_adv(gnrc_netif_t *netif, const ipv6_hdr_t *ipv6,
                             byteorder_ntohs(abro->ltime) * SEC_PER_MIN *
                             MS_PER_SEC);
     }
-#if !GNRC_IPV6_NIB_CONF_6LBR
+#if !IS_ACTIVE(CONFIG_GNRC_IPV6_NIB_6LBR)
     else if (gnrc_netif_is_6lr(netif)) {
         DEBUG("nib: multihop prefix and context dissemination on router activated,\n"
               "     but no ABRO found. Discarding router advertisement silently\n");
         return;
     }
-#endif  /* !GNRC_IPV6_NIB_CONF_6LBR */
+#endif  /* !CONFIG_GNRC_IPV6_NIB_6LBR */
 #endif  /* GNRC_IPV6_NIB_CONF_MULTIHOP_P6C */
     if (rtr_adv->ltime.u16 != 0) {
         uint16_t rtr_ltime = byteorder_ntohs(rtr_adv->ltime);
diff --git a/sys/net/gnrc/network_layer/ipv6/nib/nib_abr.c b/sys/net/gnrc/network_layer/ipv6/nib/nib_abr.c
index fad3fd839f..eaf64678df 100644
--- a/sys/net/gnrc/network_layer/ipv6/nib/nib_abr.c
+++ b/sys/net/gnrc/network_layer/ipv6/nib/nib_abr.c
@@ -14,6 +14,7 @@
  */
 
 #include <stdio.h>
+#include <kernel_defines.h>
 
 #include "net/gnrc/ipv6/nib/abr.h"
 
@@ -21,7 +22,7 @@
 #include "_nib-internal.h"
 
 #if GNRC_IPV6_NIB_CONF_MULTIHOP_P6C
-#if GNRC_IPV6_NIB_CONF_6LBR
+#if IS_ACTIVE(CONFIG_GNRC_IPV6_NIB_6LBR)
 int gnrc_ipv6_nib_abr_add(const ipv6_addr_t *addr)
 {
     _nib_abr_entry_t *abr;
@@ -55,7 +56,7 @@ void gnrc_ipv6_nib_abr_del(const ipv6_addr_t *addr)
     _nib_abr_remove(addr);
     _nib_release();
 }
-#endif  /* GNRC_IPV6_NIB_CONF_6LBR */
+#endif  /* CONFIG_GNRC_IPV6_NIB_6LBR */
 
 bool gnrc_ipv6_nib_abr_iter(void **state, gnrc_ipv6_nib_abr_t *entry)
 {
diff --git a/sys/net/gnrc/network_layer/ipv6/nib/nib_pl.c b/sys/net/gnrc/network_layer/ipv6/nib/nib_pl.c
index c9100f134a..62202ca0b6 100644
--- a/sys/net/gnrc/network_layer/ipv6/nib/nib_pl.c
+++ b/sys/net/gnrc/network_layer/ipv6/nib/nib_pl.c
@@ -16,6 +16,7 @@
 #include <assert.h>
 #include <inttypes.h>
 #include <stdio.h>
+#include <kernel_defines.h>
 
 #include "net/gnrc/ipv6/nib/pl.h"
 #include "net/gnrc/netif/internal.h"
@@ -71,7 +72,7 @@ int gnrc_ipv6_nib_pl_set(unsigned iface,
     if (netif->ipv6.aac_mode == GNRC_NETIF_AAC_AUTO) {
         dst->flags |= _PFX_SLAAC;
     }
-#if GNRC_IPV6_NIB_CONF_6LBR && GNRC_IPV6_NIB_CONF_MULTIHOP_P6C
+#if IS_ACTIVE(CONFIG_GNRC_IPV6_NIB_6LBR) && GNRC_IPV6_NIB_CONF_MULTIHOP_P6C
     if (gnrc_netif_is_6lbr(netif)) {
         _nib_abr_entry_t *abr = NULL;
 
diff --git a/sys/shell/commands/sc_gnrc_ipv6_nib.c b/sys/shell/commands/sc_gnrc_ipv6_nib.c
index 3baf21c8f9..ad1d4bb7f6 100644
--- a/sys/shell/commands/sc_gnrc_ipv6_nib.c
+++ b/sys/shell/commands/sc_gnrc_ipv6_nib.c
@@ -14,6 +14,7 @@
  */
 
 #include <stdio.h>
+#include <kernel_defines.h>
 
 #include "net/gnrc/ipv6/nib.h"
 #include "net/gnrc/netif.h"
@@ -297,14 +298,14 @@ static int _nib_route(int argc, char **argv)
 #if GNRC_IPV6_NIB_CONF_MULTIHOP_P6C
 static void _usage_nib_abr(char **argv)
 {
-#if GNRC_IPV6_NIB_CONF_6LBR
-    printf("usage: %s %s [show|add|del|help]\n", argv[0], argv[1]);
-    printf("       %s %s add <ipv6 global addr>\n",
-           argv[0], argv[1]);
-    printf("       %s %s del <ipv6 global addr>\n", argv[0], argv[1]);
-#else   /* GNRC_IPV6_NIB_CONF_6LBR */
-    printf("usage: %s %s [show|help]\n", argv[0], argv[1]);
-#endif  /* GNRC_IPV6_NIB_CONF_6LBR */
+    if (IS_ACTIVE(CONFIG_GNRC_IPV6_NIB_6LBR)) {
+        printf("usage: %s %s [show|add|del|help]\n", argv[0], argv[1]);
+        printf("       %s %s add <ipv6 global addr>\n", argv[0], argv[1]);
+        printf("       %s %s del <ipv6 global addr>\n", argv[0], argv[1]);
+    }
+    else {
+        printf("usage: %s %s [show|help]\n", argv[0], argv[1]);
+    }
     printf("       %s %s show\n", argv[0], argv[1]);
 }
 
@@ -321,7 +322,7 @@ static int _nib_abr(int argc, char **argv)
     else if ((argc > 2) && (strcmp(argv[2], "help") == 0)) {
         _usage_nib_abr(argv);
     }
-#if GNRC_IPV6_NIB_CONF_6LBR
+#if IS_ACTIVE(CONFIG_GNRC_IPV6_NIB_6LBR)
     else if ((argc > 3) && (strcmp(argv[2], "del") == 0)) {
         ipv6_addr_t addr = IPV6_ADDR_UNSPECIFIED;
 
@@ -355,7 +356,7 @@ static int _nib_abr(int argc, char **argv)
             return 1;
         }
     }
-#endif  /* GNRC_IPV6_NIB_CONF_6LBR */
+#endif  /* CONFIG_GNRC_IPV6_NIB_6LBR */
     else {
         _usage_nib_abr(argv);
         return 1;
diff --git a/tests/unittests/tests-gnrc_ipv6_nib/Makefile.include b/tests/unittests/tests-gnrc_ipv6_nib/Makefile.include
index 24fa30541c..fe468920a1 100644
--- a/tests/unittests/tests-gnrc_ipv6_nib/Makefile.include
+++ b/tests/unittests/tests-gnrc_ipv6_nib/Makefile.include
@@ -6,7 +6,7 @@ CFLAGS += -DGNRC_IPV6_NIB_NUMOF=16
 CFLAGS += -DGNRC_IPV6_NIB_OFFL_NUMOF=25
 CFLAGS += -DGNRC_IPV6_NIB_DEFAULT_ROUTER_NUMOF=4
 CFLAGS += -DGNRC_IPV6_NIB_ABR_NUMOF=4
-CFLAGS += -DGNRC_IPV6_NIB_CONF_6LBR=1
+CFLAGS += -DCONFIG_GNRC_IPV6_NIB_6LBR=1
 CFLAGS += -DGNRC_IPV6_NIB_CONF_MULTIHOP_P6C=1
 CFLAGS += -DGNRC_IPV6_NIB_CONF_DC=1