diff --git a/sys/include/net/gnrc/ipv6/netif.h b/sys/include/net/gnrc/ipv6/netif.h
index 029a4e75a6..13dde40196 100644
--- a/sys/include/net/gnrc/ipv6/netif.h
+++ b/sys/include/net/gnrc/ipv6/netif.h
@@ -342,7 +342,8 @@ typedef struct {
     xtimer_t rtr_sol_timer; /**< Timer for periodic router solicitations */
     msg_t rtr_sol_msg;      /**< msg_t for gnrc_ipv6_netif_t::rtr_sol_timer */
 #if defined (MODULE_GNRC_NDP_ROUTER) || defined (MODULE_GNRC_SIXLOWPAN_ND_ROUTER)
-    vtimer_t rtr_adv_timer; /**< Timer for periodic router advertisements */
+    xtimer_t rtr_adv_timer; /**< Timer for periodic router advertisements */
+    msg_t rtr_adv_msg;      /**< msg_t for gnrc_ipv6_netif_t::rtr_adv_timer */
 #endif
 } gnrc_ipv6_netif_t;
 
diff --git a/sys/net/gnrc/network_layer/ipv6/netif/gnrc_ipv6_netif.c b/sys/net/gnrc/network_layer/ipv6/netif/gnrc_ipv6_netif.c
index 9962f005e7..e4b853a7ee 100644
--- a/sys/net/gnrc/network_layer/ipv6/netif/gnrc_ipv6_netif.c
+++ b/sys/net/gnrc/network_layer/ipv6/netif/gnrc_ipv6_netif.c
@@ -236,7 +236,7 @@ void gnrc_ipv6_netif_remove(kernel_pid_t pid)
     mutex_lock(&entry->mutex);
     xtimer_remove(&entry->rtr_sol_timer);
 #ifdef MODULE_GNRC_NDP_ROUTER
-    vtimer_remove(&entry->rtr_adv_timer);
+    xtimer_remove(&entry->rtr_adv_timer);
 #endif
     _reset_addr_from_entry(entry);
     DEBUG("ipv6 netif: Remove IPv6 interface %" PRIkernel_pid "\n", pid);
diff --git a/sys/net/gnrc/network_layer/ndp/gnrc_ndp.c b/sys/net/gnrc/network_layer/ndp/gnrc_ndp.c
index 6e2075a0a4..169242c5ae 100644
--- a/sys/net/gnrc/network_layer/ndp/gnrc_ndp.c
+++ b/sys/net/gnrc/network_layer/ndp/gnrc_ndp.c
@@ -422,38 +422,42 @@ void gnrc_ndp_rtr_sol_handle(kernel_pid_t iface, gnrc_pktsnip_t *pkt,
         _stale_nc(iface, &ipv6->src, l2src, l2src_len);
         /* send delayed */
         if (if_entry->flags & GNRC_IPV6_NETIF_FLAGS_RTR_ADV) {
-            timex_t delay;
+            uint32_t delay;
             uint32_t ms = GNRC_NDP_MAX_RTR_ADV_DELAY;
 #ifdef MODULE_GNRC_SIXLOWPAN_ND_ROUTER
             if (if_entry->flags & GNRC_IPV6_NETIF_FLAGS_SIXLOWPAN) {
                 ms = GNRC_SIXLOWPAN_ND_MAX_RTR_ADV_DELAY;
             }
 #endif
-            delay = timex_set(0, genrand_uint32_range(0, ms));
-            vtimer_remove(&if_entry->rtr_adv_timer);
+            delay = genrand_uint32_range(0, ms);
+            xtimer_remove(&if_entry->rtr_adv_timer);
 #ifdef MODULE_GNRC_SIXLOWPAN_ND_ROUTER
             /* in case of a 6LBR we have to check if the interface is actually
              * the 6lo interface */
             if (if_entry->flags & GNRC_IPV6_NETIF_FLAGS_SIXLOWPAN) {
                 gnrc_ipv6_nc_t *nc_entry = gnrc_ipv6_nc_get(iface, &ipv6->src);
                 if (nc_entry != NULL) {
-                    vtimer_set_msg(&if_entry->rtr_adv_timer, delay, gnrc_ipv6_pid,
-                            GNRC_NDP_MSG_RTR_ADV_SIXLOWPAN_DELAY, nc_entry);
+                    if_entry->rtr_adv_msg.type = GNRC_NDP_MSG_RTR_ADV_SIXLOWPAN_DELAY;
+                    if_entry->rtr_adv_msg.content.ptr = (char *) nc_entry;
+                    xtimer_set_msg(&if_entry->rtr_adv_timer, delay, &if_entry->rtr_adv_msg,
+                                   gnrc_ipv6_pid);
                 }
             }
 #elif defined(MODULE_GNRC_NDP_ROUTER) || defined(MODULE_GNRC_SIXLOWPAN_ND_BORDER_ROUTER)
             if (ipv6_addr_is_unspecified(&ipv6->src)) {
                 /* either multicast, if source unspecified */
-                vtimer_set_msg(&if_entry->rtr_adv_timer, delay, gnrc_ipv6_pid,
-                               GNRC_NDP_MSG_RTR_ADV_RETRANS, if_entry);
+                if_entry->rtr_adv_msg.type = GNRC_NDP_MSG_RTR_ADV_RETRANS;
+                if_entry->rtr_adv_msg.content.ptr = (char *) if_entry;
+                xtimer_set_msg(&if_entry->rtr_adv_timer, delay, &if_entry->rtr_adv_msg,
+                               gnrc_ipv6_pid);
             }
             else {
                 /* or unicast, if source is known */
                 /* XXX: can't just use GNRC_NETAPI_MSG_TYPE_SND, since the next retransmission
                  * must also be set. */
                 gnrc_ipv6_nc_t *nc_entry = gnrc_ipv6_nc_get(iface, &ipv6->src);
-                xtimer_set_msg(&nc_entry->rtr_adv_timer, (uint32_t) timex_uint64(delay),
-                               &nc_entry->rtr_adv_msg, gnrc_ipv6_pid);
+                xtimer_set_msg(&nc_entry->rtr_adv_timer, delay, &nc_entry->rtr_adv_msg,
+                               gnrc_ipv6_pid);
             }
 #endif
         }
diff --git a/sys/net/gnrc/network_layer/ndp/router/gnrc_ndp_router.c b/sys/net/gnrc/network_layer/ndp/router/gnrc_ndp_router.c
index ce23cc7a7c..48813e88ef 100644
--- a/sys/net/gnrc/network_layer/ndp/router/gnrc_ndp_router.c
+++ b/sys/net/gnrc/network_layer/ndp/router/gnrc_ndp_router.c
@@ -106,9 +106,11 @@ static void _send_rtr_adv(gnrc_ipv6_netif_t *iface, ipv6_addr_t *dst)
     }
     if (!fin || (iface->rtr_adv_count > 1)) {   /* regard for off-by-one-error */
         /* reset timer for next router advertisement */
-        vtimer_remove(&iface->rtr_adv_timer);
-        vtimer_set_msg(&iface->rtr_adv_timer, timex_set(interval, 0),
-                       gnrc_ipv6_pid, GNRC_NDP_MSG_RTR_ADV_RETRANS, iface);
+        xtimer_remove(&iface->rtr_adv_timer);
+        iface->rtr_adv_msg.type = GNRC_NDP_MSG_RTR_ADV_RETRANS;
+        iface->rtr_adv_msg.content.ptr = (char *) iface;
+        xtimer_set_msg(&iface->rtr_adv_timer, interval * SEC_IN_USEC, &iface->rtr_adv_msg,
+                       gnrc_ipv6_pid);
     }
     mutex_unlock(&iface->mutex);
     for (int i = 0; i < GNRC_IPV6_NETIF_ADDR_NUMOF; i++) {