diff --git a/networking/libiproute/ipaddress.c b/networking/libiproute/ipaddress.c
index a6d5129e7..8845cab91 100644
--- a/networking/libiproute/ipaddress.c
+++ b/networking/libiproute/ipaddress.c
@@ -137,12 +137,11 @@ static NOINLINE int print_linkinfo(const struct nlmsghdr *n)
 	{
 		unsigned m_flag = 0;
 		if (tb[IFLA_LINK]) {
-			SPRINT_BUF(b1);
 			int iflink = *(int*)RTA_DATA(tb[IFLA_LINK]);
 			if (iflink == 0)
 				printf("@NONE: ");
 			else {
-				printf("@%s: ", ll_idx_n2a(iflink, b1));
+				printf("@%s: ", ll_index_to_name(iflink));
 				m_flag = ll_index_to_flags(iflink);
 				m_flag = !(m_flag & IFF_UP);
 			}
@@ -158,8 +157,7 @@ static NOINLINE int print_linkinfo(const struct nlmsghdr *n)
 		printf("qdisc %s ", (char*)RTA_DATA(tb[IFLA_QDISC]));
 #ifdef IFLA_MASTER
 	if (tb[IFLA_MASTER]) {
-		SPRINT_BUF(b1);
-		printf("master %s ", ll_idx_n2a(*(int*)RTA_DATA(tb[IFLA_MASTER]), b1));
+		printf("master %s ", ll_index_to_name(*(int*)RTA_DATA(tb[IFLA_MASTER])));
 	}
 #endif
 /* IFLA_OPERSTATE was added to kernel with the same commit as IFF_DORMANT */
@@ -218,7 +216,6 @@ static int FAST_FUNC print_addrinfo(const struct sockaddr_nl *who UNUSED_PARAM,
 	int len = n->nlmsg_len;
 	struct rtattr * rta_tb[IFA_MAX+1];
 	char abuf[256];
-	SPRINT_BUF(b1);
 
 	if (n->nlmsg_type != RTM_NEWADDR && n->nlmsg_type != RTM_DELADDR)
 		return 0;
@@ -250,7 +247,7 @@ static int FAST_FUNC print_addrinfo(const struct sockaddr_nl *who UNUSED_PARAM,
 		if (rta_tb[IFA_LABEL])
 			label = RTA_DATA(rta_tb[IFA_LABEL]);
 		else
-			label = ll_idx_n2a(ifa->ifa_index, b1);
+			label = ll_index_to_name(ifa->ifa_index);
 		if (fnmatch(G_filter.label, label, 0) != 0)
 			return 0;
 	}
@@ -325,7 +322,7 @@ static int FAST_FUNC print_addrinfo(const struct sockaddr_nl *who UNUSED_PARAM,
 					abuf, sizeof(abuf))
 		);
 	}
-	printf("scope %s ", rtnl_rtscope_n2a(ifa->ifa_scope, b1));
+	printf("scope %s ", rtnl_rtscope_n2a(ifa->ifa_scope));
 	if (ifa->ifa_flags & IFA_F_SECONDARY) {
 		ifa->ifa_flags &= ~IFA_F_SECONDARY;
 		printf("secondary ");
@@ -556,12 +553,11 @@ int FAST_FUNC ipaddr_list_or_flush(char **argv, int flush)
 							continue;
 					}
 					if (G_filter.label) {
-						SPRINT_BUF(b1);
 						const char *label;
 						if (tb[IFA_LABEL])
 							label = RTA_DATA(tb[IFA_LABEL]);
 						else
-							label = ll_idx_n2a(ifa->ifa_index, b1);
+							label = ll_index_to_name(ifa->ifa_index);
 						if (fnmatch(G_filter.label, label, 0) != 0)
 							continue;
 					}
diff --git a/networking/libiproute/iproute.c b/networking/libiproute/iproute.c
index 170c67b30..6ecd5f719 100644
--- a/networking/libiproute/iproute.c
+++ b/networking/libiproute/iproute.c
@@ -87,7 +87,6 @@ static int FAST_FUNC print_route(const struct sockaddr_nl *who UNUSED_PARAM,
 	inet_prefix dst;
 	inet_prefix src;
 	int host_len = -1;
-	SPRINT_BUF(b1);
 
 	if (n->nlmsg_type != RTM_NEWROUTE && n->nlmsg_type != RTM_DELROUTE) {
 		fprintf(stderr, "Not a route: %08x %08x %08x\n",
@@ -236,7 +235,7 @@ static int FAST_FUNC print_route(const struct sockaddr_nl *who UNUSED_PARAM,
 		printf("Deleted ");
 	}
 	if (r->rtm_type != RTN_UNICAST /* && !G_filter.type - always 0 */) {
-		printf("%s ", rtnl_rtntype_n2a(r->rtm_type, b1));
+		printf("%s ", rtnl_rtntype_n2a(r->rtm_type));
 	}
 
 	if (tb[RTA_DST]) {
diff --git a/networking/libiproute/iprule.c b/networking/libiproute/iprule.c
index 8dbe6bd92..774a3e220 100644
--- a/networking/libiproute/iprule.c
+++ b/networking/libiproute/iprule.c
@@ -45,7 +45,6 @@ static int FAST_FUNC print_rule(const struct sockaddr_nl *who UNUSED_PARAM,
 	int host_len = -1;
 	struct rtattr * tb[RTA_MAX+1];
 	char abuf[256];
-	SPRINT_BUF(b1);
 
 	if (n->nlmsg_type != RTM_NEWRULE)
 		return 0;
@@ -110,7 +109,7 @@ static int FAST_FUNC print_rule(const struct sockaddr_nl *who UNUSED_PARAM,
 	}
 
 	if (r->rtm_tos) {
-		printf("tos %s ", rtnl_dsfield_n2a(r->rtm_tos, b1));
+		printf("tos %s ", rtnl_dsfield_n2a(r->rtm_tos));
 	}
 	if (tb[RTA_PROTOINFO]) {
 		printf("fwmark %#x ", *(uint32_t*)RTA_DATA(tb[RTA_PROTOINFO]));
@@ -121,7 +120,7 @@ static int FAST_FUNC print_rule(const struct sockaddr_nl *who UNUSED_PARAM,
 	}
 
 	if (r->rtm_table)
-		printf("lookup %s ", rtnl_rttable_n2a(r->rtm_table, b1));
+		printf("lookup %s ", rtnl_rttable_n2a(r->rtm_table));
 
 	if (tb[RTA_FLOW]) {
 		uint32_t to = *(uint32_t*)RTA_DATA(tb[RTA_FLOW]);
@@ -129,10 +128,10 @@ static int FAST_FUNC print_rule(const struct sockaddr_nl *who UNUSED_PARAM,
 		to &= 0xFFFF;
 		if (from) {
 			printf("realms %s/",
-				rtnl_rtrealm_n2a(from, b1));
+				rtnl_rtrealm_n2a(from));
 		}
 		printf("%s ",
-			rtnl_rtrealm_n2a(to, b1));
+			rtnl_rtrealm_n2a(to));
 	}
 
 	if (r->rtm_type == RTN_NAT) {
@@ -145,7 +144,7 @@ static int FAST_FUNC print_rule(const struct sockaddr_nl *who UNUSED_PARAM,
 		} else
 			printf("masquerade");
 	} else if (r->rtm_type != RTN_UNICAST)
-		fputs(rtnl_rtntype_n2a(r->rtm_type, b1), stdout);
+		fputs(rtnl_rtntype_n2a(r->rtm_type), stdout);
 
 	bb_putchar('\n');
 	/*fflush_all();*/
diff --git a/networking/libiproute/iptunnel.c b/networking/libiproute/iptunnel.c
index b54c3c53f..a65d5e579 100644
--- a/networking/libiproute/iptunnel.c
+++ b/networking/libiproute/iptunnel.c
@@ -432,13 +432,12 @@ static void print_tunnel(struct ip_tunnel_parm *p)
 	else
 		printf(" ttl inherit ");
 	if (p->iph.tos) {
-		SPRINT_BUF(b1);
 		printf(" tos");
 		if (p->iph.tos & 1)
 			printf(" inherit");
 		if (p->iph.tos & ~1)
 			printf("%c%s ", p->iph.tos & 1 ? '/' : ' ',
-				rtnl_dsfield_n2a(p->iph.tos & ~1, b1));
+				rtnl_dsfield_n2a(p->iph.tos & ~1));
 	}
 	if (!(p->iph.frag_off & htons(IP_DF)))
 		printf(" nopmtudisc");
diff --git a/networking/libiproute/ll_map.c b/networking/libiproute/ll_map.c
index 27cd90f34..feb6e8d22 100644
--- a/networking/libiproute/ll_map.c
+++ b/networking/libiproute/ll_map.c
@@ -99,7 +99,6 @@ const char FAST_FUNC *ll_idx_n2a(int idx, char *buf)
 	return buf;
 }
 
-
 const char FAST_FUNC *ll_index_to_name(int idx)
 {
 	static char nbuf[16];
diff --git a/networking/libiproute/rt_names.c b/networking/libiproute/rt_names.c
index c474ab903..375f14528 100644
--- a/networking/libiproute/rt_names.c
+++ b/networking/libiproute/rt_names.c
@@ -88,21 +88,20 @@ static void rtnl_rtprot_initialize(void)
 	rtnl_tab_initialize("/etc/iproute2/rt_protos", rtnl_rtprot_tab->tab);
 }
 
-const char* FAST_FUNC rtnl_rtprot_n2a(int id, char *buf)
+#if 0 /* UNUSED */
+const char* FAST_FUNC rtnl_rtprot_n2a(int id)
 {
 	if (id < 0 || id >= 256) {
-		sprintf(buf, "%d", id);
-		return buf;
+		return itoa(id);
 	}
 
 	rtnl_rtprot_initialize();
 
 	if (rtnl_rtprot_tab->tab[id])
 		return rtnl_rtprot_tab->tab[id];
-	/* buf is SPRINT_BSIZE big */
-	sprintf(buf, "%d", id);
-	return buf;
+	return itoa(id);
 }
+#endif
 
 int FAST_FUNC rtnl_rtprot_a2n(uint32_t *id, char *arg)
 {
@@ -126,20 +125,17 @@ static void rtnl_rtscope_initialize(void)
 	rtnl_tab_initialize("/etc/iproute2/rt_scopes", rtnl_rtscope_tab->tab);
 }
 
-const char* FAST_FUNC rtnl_rtscope_n2a(int id, char *buf)
+const char* FAST_FUNC rtnl_rtscope_n2a(int id)
 {
 	if (id < 0 || id >= 256) {
-		sprintf(buf, "%d", id);
-		return buf;
+		return itoa(id);
 	}
 
 	rtnl_rtscope_initialize();
 
 	if (rtnl_rtscope_tab->tab[id])
 		return rtnl_rtscope_tab->tab[id];
-	/* buf is SPRINT_BSIZE big */
-	sprintf(buf, "%d", id);
-	return buf;
+	return itoa(id);
 }
 
 int FAST_FUNC rtnl_rtscope_a2n(uint32_t *id, char *arg)
@@ -166,20 +162,17 @@ int FAST_FUNC rtnl_rtrealm_a2n(uint32_t *id, char *arg)
 }
 
 #if ENABLE_FEATURE_IP_RULE
-const char* FAST_FUNC rtnl_rtrealm_n2a(int id, char *buf)
+const char* FAST_FUNC rtnl_rtrealm_n2a(int id)
 {
 	if (id < 0 || id >= 256) {
-		sprintf(buf, "%d", id);
-		return buf;
+		return itoa(id);
 	}
 
 	rtnl_rtrealm_initialize();
 
 	if (rtnl_rtrealm_tab->tab[id])
 		return rtnl_rtrealm_tab->tab[id];
-	/* buf is SPRINT_BSIZE big */
-	sprintf(buf, "%d", id);
-	return buf;
+	return itoa(id);
 }
 #endif
 
@@ -194,20 +187,17 @@ static void rtnl_rtdsfield_initialize(void)
 	rtnl_tab_initialize("/etc/iproute2/rt_dsfield", rtnl_rtdsfield_tab->tab);
 }
 
-const char* FAST_FUNC rtnl_dsfield_n2a(int id, char *buf)
+const char* FAST_FUNC rtnl_dsfield_n2a(int id)
 {
 	if (id < 0 || id >= 256) {
-		sprintf(buf, "%d", id);
-		return buf;
+		return itoa(id);
 	}
 
 	rtnl_rtdsfield_initialize();
 
 	if (rtnl_rtdsfield_tab->tab[id])
 		return rtnl_rtdsfield_tab->tab[id];
-	/* buf is SPRINT_BSIZE big */
-	sprintf(buf, "0x%02x", id);
-	return buf;
+	return itoa(id);
 }
 
 int FAST_FUNC rtnl_dsfield_a2n(uint32_t *id, char *arg)
@@ -231,20 +221,17 @@ static void rtnl_rttable_initialize(void)
 	rtnl_tab_initialize("/etc/iproute2/rt_tables", rtnl_rttable_tab->tab);
 }
 
-const char* FAST_FUNC rtnl_rttable_n2a(int id, char *buf)
+const char* FAST_FUNC rtnl_rttable_n2a(int id)
 {
 	if (id < 0 || id >= 256) {
-		sprintf(buf, "%d", id);
-		return buf;
+		return itoa(id);
 	}
 
 	rtnl_rttable_initialize();
 
 	if (rtnl_rttable_tab->tab[id])
 		return rtnl_rttable_tab->tab[id];
-	/* buf is SPRINT_BSIZE big */
-	sprintf(buf, "%d", id);
-	return buf;
+	return itoa(id);
 }
 
 int FAST_FUNC rtnl_rttable_a2n(uint32_t *id, char *arg)
diff --git a/networking/libiproute/rt_names.h b/networking/libiproute/rt_names.h
index e73aa851c..29932d6a4 100644
--- a/networking/libiproute/rt_names.h
+++ b/networking/libiproute/rt_names.h
@@ -4,12 +4,11 @@
 
 PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
 
-/* buf is SPRINT_BSIZE big */
-extern const char* rtnl_rtprot_n2a(int id, char *buf) FAST_FUNC;
-extern const char* rtnl_rtscope_n2a(int id, char *buf) FAST_FUNC;
-extern const char* rtnl_rtrealm_n2a(int id, char *buf) FAST_FUNC;
-extern const char* rtnl_dsfield_n2a(int id, char *buf) FAST_FUNC;
-extern const char* rtnl_rttable_n2a(int id, char *buf) FAST_FUNC;
+extern const char* rtnl_rtprot_n2a(int id) FAST_FUNC;
+extern const char* rtnl_rtscope_n2a(int id) FAST_FUNC;
+extern const char* rtnl_rtrealm_n2a(int id) FAST_FUNC;
+extern const char* rtnl_dsfield_n2a(int id) FAST_FUNC;
+extern const char* rtnl_rttable_n2a(int id) FAST_FUNC;
 extern int rtnl_rtprot_a2n(uint32_t *id, char *arg) FAST_FUNC;
 extern int rtnl_rtscope_a2n(uint32_t *id, char *arg) FAST_FUNC;
 extern int rtnl_rtrealm_a2n(uint32_t *id, char *arg) FAST_FUNC;
diff --git a/networking/libiproute/rtm_map.c b/networking/libiproute/rtm_map.c
index 3bab53baf..c763da049 100644
--- a/networking/libiproute/rtm_map.c
+++ b/networking/libiproute/rtm_map.c
@@ -12,7 +12,7 @@
 #include "rt_names.h"
 #include "utils.h"
 
-const char* FAST_FUNC rtnl_rtntype_n2a(int id, char *buf)
+const char* FAST_FUNC rtnl_rtntype_n2a(int id)
 {
 	switch (id) {
 	case RTN_UNSPEC:
@@ -40,9 +40,7 @@ const char* FAST_FUNC rtnl_rtntype_n2a(int id, char *buf)
 	case RTN_XRESOLVE:
 		return "xresolve";
 	default:
-		/* buf is SPRINT_BSIZE big */
-		sprintf(buf, "%d", id);
-		return buf;
+		return itoa(id);
 	}
 }
 
diff --git a/networking/libiproute/rtm_map.h b/networking/libiproute/rtm_map.h
index 4377bd590..63b665169 100644
--- a/networking/libiproute/rtm_map.h
+++ b/networking/libiproute/rtm_map.h
@@ -4,7 +4,7 @@
 
 PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
 
-const char *rtnl_rtntype_n2a(int id, char *buf) FAST_FUNC;
+const char *rtnl_rtntype_n2a(int id) FAST_FUNC;
 int rtnl_rtntype_a2n(int *id, char *arg) FAST_FUNC;
 
 int get_rt_realms(uint32_t *realms, char *arg) FAST_FUNC;