diff --git a/sys/net/if.c b/sys/net/if.c
--- a/sys/net/if.c
+++ b/sys/net/if.c
@@ -4553,27 +4553,6 @@
 _Static_assert(sizeof(struct _if_iter_ext) <= sizeof(struct if_iter),
     "Public version of if_iter structure is too small");
 
-
-int
-if_foreach_sleep(if_foreach_match_t match_cb, void *match_arg, if_foreach_cb_t cb,
-    void *cb_arg)
-{
-	struct if_iter_ext_params params = {
-		.match_cb = match_cb,
-		.match_arg = match_arg,
-		.can_sleep = true,
-	};
-	struct if_iter it;
-	int error = 0;
-
-	for (if_t ifp = if_iter_ext_start(&it, &params); ifp; ifp = if_iter_ext_next(&it)) {
-		if (error == 0)
-			error = cb(ifp, cb_arg);
-	}
-
-	return (error);
-}
-
 /*
  * Iterates over the list of interfaces, permitting callback function @cb to sleep.
  * Stops iteration if @cb returns non-zero error code.
diff --git a/sys/net/if_var.h b/sys/net/if_var.h
--- a/sys/net/if_var.h
+++ b/sys/net/if_var.h
@@ -682,7 +682,6 @@
 typedef int (*if_foreach_cb_t)(if_t, void *);
 typedef bool (*if_foreach_match_t)(if_t, void *);
 int	if_foreach(if_foreach_cb_t, void *);
-int	if_foreach_sleep(if_foreach_match_t, void *, if_foreach_cb_t, void *);
 
 /* Opaque iterator structure for iterating over interfaces. */
 struct if_iter {
diff --git a/sys/netlink/route/iface.c b/sys/netlink/route/iface.c
--- a/sys/netlink/route/iface.c
+++ b/sys/netlink/route/iface.c
@@ -375,15 +375,6 @@
 	return (true);
 }
 
-static int
-dump_cb(struct ifnet *ifp, void *_arg)
-{
-	struct netlink_walkargs *wa = (struct netlink_walkargs *)_arg;
-	if (!dump_iface(wa->nw, ifp, &wa->hdr, 0))
-		return (ENOMEM);
-	return (0);
-}
-
 /*
  * {nlmsg_len=52, nlmsg_type=RTM_GETLINK, nlmsg_flags=NLM_F_REQUEST, nlmsg_seq=1662842818, nlmsg_pid=0},
  *  {ifi_family=AF_PACKET, ifi_type=ARPHRD_NETROM, ifi_index=0, ifi_flags=0, ifi_change=0},
@@ -449,7 +440,16 @@
 	 */
 
 	NL_LOG(LOG_DEBUG2, "Start dump");
-	if_foreach_sleep(match_iface, &attrs, dump_cb, &wa);
+	struct if_iter_ext_params params = {
+		.match_cb = match_iface,
+		.match_arg = &attrs,
+		.can_sleep = true,
+	};
+	struct if_iter it;
+
+	for (if_t ifp = if_iter_ext_start(&it, &params); ifp; ifp = if_iter_ext_next(&it))
+		dump_iface(wa.nw, ifp, &wa.hdr, 0);
+
 	NL_LOG(LOG_DEBUG2, "End dump, iterated %d dumped %d", wa.count, wa.dumped);
 
 	if (!nlmsg_end_dump(wa.nw, error, &wa.hdr)) {