diff --git a/sys/netinet/sctp_asconf.c b/sys/netinet/sctp_asconf.c
index a20f966446c7..bc5e10cea5ea 100644
--- a/sys/netinet/sctp_asconf.c
+++ b/sys/netinet/sctp_asconf.c
@@ -150,7 +150,12 @@ sctp_process_asconf_add_ip(struct sockaddr *src, struct sctp_asconf_paramhdr *ap
 	struct mbuf *m_reply = NULL;
 	struct sockaddr_storage sa_store;
 	struct sctp_paramhdr *ph;
-	uint16_t param_type, param_length, aparam_length;
+	uint16_t param_type, aparam_length;
+
+#if defined(INET) || defined(INET6)
+	uint16_t param_length;
+
+#endif
 	struct sockaddr *sa;
 	int zero_address = 0;
 	int bad_address = 0;
@@ -169,8 +174,9 @@ sctp_process_asconf_add_ip(struct sockaddr *src, struct sctp_asconf_paramhdr *ap
 	aparam_length = ntohs(aph->ph.param_length);
 	ph = (struct sctp_paramhdr *)(aph + 1);
 	param_type = ntohs(ph->param_type);
+#if defined(INET) || defined(INET6)
 	param_length = ntohs(ph->param_length);
-
+#endif
 	sa = (struct sockaddr *)&sa_store;
 	switch (param_type) {
 #ifdef INET
@@ -298,7 +304,12 @@ sctp_process_asconf_delete_ip(struct sockaddr *src,
 	struct mbuf *m_reply = NULL;
 	struct sockaddr_storage sa_store;
 	struct sctp_paramhdr *ph;
-	uint16_t param_type, param_length, aparam_length;
+	uint16_t param_type, aparam_length;
+
+#if defined(INET) || defined(INET6)
+	uint16_t param_length;
+
+#endif
 	struct sockaddr *sa;
 	int zero_address = 0;
 	int result;
@@ -317,8 +328,9 @@ sctp_process_asconf_delete_ip(struct sockaddr *src,
 	aparam_length = ntohs(aph->ph.param_length);
 	ph = (struct sctp_paramhdr *)(aph + 1);
 	param_type = ntohs(ph->param_type);
+#if defined(INET) || defined(INET6)
 	param_length = ntohs(ph->param_length);
-
+#endif
 	sa = (struct sockaddr *)&sa_store;
 	switch (param_type) {
 #ifdef INET
@@ -427,7 +439,12 @@ sctp_process_asconf_set_primary(struct sockaddr *src,
 	struct mbuf *m_reply = NULL;
 	struct sockaddr_storage sa_store;
 	struct sctp_paramhdr *ph;
-	uint16_t param_type, param_length, aparam_length;
+	uint16_t param_type, aparam_length;
+
+#if defined(INET) || defined(INET6)
+	uint16_t param_length;
+
+#endif
 	struct sockaddr *sa;
 	int zero_address = 0;
 
@@ -445,8 +462,9 @@ sctp_process_asconf_set_primary(struct sockaddr *src,
 	aparam_length = ntohs(aph->ph.param_length);
 	ph = (struct sctp_paramhdr *)(aph + 1);
 	param_type = ntohs(ph->param_type);
+#if defined(INET) || defined(INET6)
 	param_length = ntohs(ph->param_length);
-
+#endif
 	sa = (struct sockaddr *)&sa_store;
 	switch (param_type) {
 #ifdef INET
@@ -860,10 +878,12 @@ sctp_asconf_addr_match(struct sctp_asconf_addr *aa, struct sockaddr *sa)
 static uint32_t
 sctp_addr_match(struct sctp_paramhdr *ph, struct sockaddr *sa)
 {
+#if defined(INET) || defined(INET6)
 	uint16_t param_type, param_length;
 
 	param_type = ntohs(ph->param_type);
 	param_length = ntohs(ph->param_length);
+#endif
 	switch (sa->sa_family) {
 #ifdef INET6
 	case AF_INET6:
@@ -874,7 +894,7 @@ sctp_addr_match(struct sctp_paramhdr *ph, struct sockaddr *sa)
 
 			v6addr = (struct sctp_ipv6addr_param *)ph;
 			if ((param_type == SCTP_IPV6_ADDRESS) &&
-			    param_length == sizeof(struct sctp_ipv6addr_param) &&
+			    (param_length == sizeof(struct sctp_ipv6addr_param)) &&
 			    (memcmp(&v6addr->addr, &sin6->sin6_addr,
 			    sizeof(struct in6_addr)) == 0)) {
 				return (1);
@@ -890,7 +910,7 @@ sctp_addr_match(struct sctp_paramhdr *ph, struct sockaddr *sa)
 
 			v4addr = (struct sctp_ipv4addr_param *)ph;
 			if ((param_type == SCTP_IPV4_ADDRESS) &&
-			    param_length == sizeof(struct sctp_ipv4addr_param) &&
+			    (param_length == sizeof(struct sctp_ipv4addr_param)) &&
 			    (memcmp(&v4addr->addr, &sin->sin_addr,
 			    sizeof(struct in_addr)) == 0)) {
 				return (1);
diff --git a/sys/netinet/sctp_output.c b/sys/netinet/sctp_output.c
index 34edf5b0e60b..b6cac1ad461c 100644
--- a/sys/netinet/sctp_output.c
+++ b/sys/netinet/sctp_output.c
@@ -1937,10 +1937,13 @@ sctp_is_address_in_scope(struct sctp_ifa *ifa,
 static struct mbuf *
 sctp_add_addr_to_mbuf(struct mbuf *m, struct sctp_ifa *ifa, uint16_t * len)
 {
+#if defined(INET) || defined(INET6)
 	struct sctp_paramhdr *parmh;
 	struct mbuf *mret;
 	uint16_t plen;
 
+#endif
+
 	switch (ifa->address.sa.sa_family) {
 #ifdef INET
 	case AF_INET:
@@ -1955,6 +1958,7 @@ sctp_add_addr_to_mbuf(struct mbuf *m, struct sctp_ifa *ifa, uint16_t * len)
 	default:
 		return (m);
 	}
+#if defined(INET) || defined(INET6)
 	if (M_TRAILINGSPACE(m) >= plen) {
 		/* easy side we just drop it on the end */
 		parmh = (struct sctp_paramhdr *)(SCTP_BUF_AT(m, SCTP_BUF_LEN(m)));
@@ -2015,6 +2019,7 @@ sctp_add_addr_to_mbuf(struct mbuf *m, struct sctp_ifa *ifa, uint16_t * len)
 		*len += plen;
 	}
 	return (mret);
+#endif
 }
 
 
@@ -3855,8 +3860,11 @@ sctp_lowlevel_chunk_output(struct sctp_inpcb *inp,
 	struct sctphdr *sctphdr;
 	int packet_length;
 	int ret;
+
+#if defined(INET) || defined(INET6)
 	uint32_t vrf_id;
 
+#endif
 #if defined(INET) || defined(INET6)
 	struct mbuf *o_pak;
 	sctp_route_t *ro = NULL;
@@ -3875,12 +3883,13 @@ sctp_lowlevel_chunk_output(struct sctp_inpcb *inp,
 		sctp_m_freem(m);
 		return (EFAULT);
 	}
+#if defined(INET) || defined(INET6)
 	if (stcb) {
 		vrf_id = stcb->asoc.vrf_id;
 	} else {
 		vrf_id = inp->def_vrf_id;
 	}
-
+#endif
 	/* fill in the HMAC digest for any AUTH chunk in the packet */
 	if ((auth != NULL) && (stcb != NULL)) {
 		sctp_fill_hmac_digest_m(m, auth_offset, auth, stcb, auth_keyid);
@@ -10798,8 +10807,12 @@ sctp_send_resp_msg(struct sockaddr *src, struct sockaddr *dst,
 	struct sctphdr *shout;
 	struct sctp_chunkhdr *ch;
 	struct udphdr *udp;
-	int len, cause_len, padding_len, ret;
+	int len, cause_len, padding_len;
 
+#if defined(INET) || defined(INET6)
+	int ret;
+
+#endif
 #ifdef INET
 	struct sockaddr_in *src_sin, *dst_sin;
 	struct ip *ip;
diff --git a/sys/netinet/sctp_pcb.c b/sys/netinet/sctp_pcb.c
index 1d21b2a747d7..ffb6c10e15ba 100644
--- a/sys/netinet/sctp_pcb.c
+++ b/sys/netinet/sctp_pcb.c
@@ -827,18 +827,30 @@ sctp_del_addr_from_vrf(uint32_t vrf_id, struct sockaddr *addr,
 static int
 sctp_does_stcb_own_this_addr(struct sctp_tcb *stcb, struct sockaddr *to)
 {
-	int loopback_scope, ipv4_local_scope, local_scope, site_scope;
-	int ipv4_addr_legal, ipv6_addr_legal;
+	int loopback_scope;
+
+#if defined(INET)
+	int ipv4_local_scope, ipv4_addr_legal;
+
+#endif
+#if defined(INET6)
+	int local_scope, site_scope, ipv6_addr_legal;
+
+#endif
 	struct sctp_vrf *vrf;
 	struct sctp_ifn *sctp_ifn;
 	struct sctp_ifa *sctp_ifa;
 
 	loopback_scope = stcb->asoc.scope.loopback_scope;
+#if defined(INET)
 	ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope;
+	ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal;
+#endif
+#if defined(INET6)
 	local_scope = stcb->asoc.scope.local_scope;
 	site_scope = stcb->asoc.scope.site_scope;
-	ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal;
 	ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal;
+#endif
 
 	SCTP_IPI_ADDR_RLOCK();
 	vrf = sctp_find_vrf(stcb->asoc.vrf_id);
@@ -1971,8 +1983,13 @@ sctp_findassociation_special_addr(struct mbuf *m, int offset,
     struct sockaddr *dst)
 {
 	struct sctp_paramhdr *phdr, parm_buf;
+
+#if defined(INET) || defined(INET6)
 	struct sctp_tcb *stcb;
-	uint32_t ptype, plen;
+	uint16_t ptype;
+
+#endif
+	uint16_t plen;
 
 #ifdef INET
 	struct sockaddr_in sin4;
@@ -1996,13 +2013,14 @@ sctp_findassociation_special_addr(struct mbuf *m, int offset,
 	sin6.sin6_port = sh->src_port;
 #endif
 
-	stcb = NULL;
 	offset += sizeof(struct sctp_init_chunk);
 
 	phdr = sctp_get_next_param(m, offset, &parm_buf, sizeof(parm_buf));
 	while (phdr != NULL) {
 		/* now we must see if we want the parameter */
+#if defined(INET) || defined(INET6)
 		ptype = ntohs(phdr->param_type);
+#endif
 		plen = ntohs(phdr->param_length);
 		if (plen == 0) {
 			break;
diff --git a/sys/netinet/sctp_usrreq.c b/sys/netinet/sctp_usrreq.c
index fa57d13196a4..0ff166c5e24b 100644
--- a/sys/netinet/sctp_usrreq.c
+++ b/sys/netinet/sctp_usrreq.c
@@ -1120,9 +1120,17 @@ sctp_fill_up_addresses_vrf(struct sctp_inpcb *inp,
 {
 	struct sctp_ifn *sctp_ifn;
 	struct sctp_ifa *sctp_ifa;
-	int loopback_scope, ipv4_local_scope, local_scope, site_scope;
 	size_t actual;
-	int ipv4_addr_legal, ipv6_addr_legal;
+	int loopback_scope;
+
+#if defined(INET)
+	int ipv4_local_scope, ipv4_addr_legal;
+
+#endif
+#if defined(INET6)
+	int local_scope, site_scope, ipv6_addr_legal;
+
+#endif
 	struct sctp_vrf *vrf;
 
 	actual = 0;
@@ -1132,27 +1140,43 @@ sctp_fill_up_addresses_vrf(struct sctp_inpcb *inp,
 	if (stcb) {
 		/* Turn on all the appropriate scope */
 		loopback_scope = stcb->asoc.scope.loopback_scope;
+#if defined(INET)
 		ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope;
+		ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal;
+#endif
+#if defined(INET6)
 		local_scope = stcb->asoc.scope.local_scope;
 		site_scope = stcb->asoc.scope.site_scope;
-		ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal;
 		ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal;
+#endif
 	} else {
 		/* Use generic values for endpoints. */
 		loopback_scope = 1;
+#if defined(INET)
 		ipv4_local_scope = 1;
+#endif
+#if defined(INET6)
 		local_scope = 1;
 		site_scope = 1;
+#endif
 		if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
+#if defined(INET6)
 			ipv6_addr_legal = 1;
+#endif
+#if defined(INET)
 			if (SCTP_IPV6_V6ONLY(inp)) {
 				ipv4_addr_legal = 0;
 			} else {
 				ipv4_addr_legal = 1;
 			}
+#endif
 		} else {
+#if defined(INET6)
 			ipv6_addr_legal = 0;
+#endif
+#if defined(INET)
 			ipv4_addr_legal = 1;
+#endif
 		}
 	}
 	vrf = sctp_find_vrf(vrf_id);
diff --git a/sys/netinet/sctputil.c b/sys/netinet/sctputil.c
index c101118b9920..89d4302df1e8 100644
--- a/sys/netinet/sctputil.c
+++ b/sys/netinet/sctputil.c
@@ -6612,8 +6612,16 @@ sctp_bindx_delete_address(struct sctp_inpcb *inp,
 int
 sctp_local_addr_count(struct sctp_tcb *stcb)
 {
-	int loopback_scope, ipv4_local_scope, local_scope, site_scope;
-	int ipv4_addr_legal, ipv6_addr_legal;
+	int loopback_scope;
+
+#if defined(INET)
+	int ipv4_local_scope, ipv4_addr_legal;
+
+#endif
+#if defined (INET6)
+	int local_scope, site_scope, ipv6_addr_legal;
+
+#endif
 	struct sctp_vrf *vrf;
 	struct sctp_ifn *sctp_ifn;
 	struct sctp_ifa *sctp_ifa;
@@ -6621,11 +6629,15 @@ sctp_local_addr_count(struct sctp_tcb *stcb)
 
 	/* Turn on all the appropriate scopes */
 	loopback_scope = stcb->asoc.scope.loopback_scope;
+#if defined(INET)
 	ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope;
+	ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal;
+#endif
+#if defined(INET6)
 	local_scope = stcb->asoc.scope.local_scope;
 	site_scope = stcb->asoc.scope.site_scope;
-	ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal;
 	ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal;
+#endif
 	SCTP_IPI_ADDR_RLOCK();
 	vrf = sctp_find_vrf(stcb->asoc.vrf_id);
 	if (vrf == NULL) {
diff --git a/sys/netinet6/sctp6_usrreq.c b/sys/netinet6/sctp6_usrreq.c
index 511b0e831730..6c9f9ee1fc3e 100644
--- a/sys/netinet6/sctp6_usrreq.c
+++ b/sys/netinet6/sctp6_usrreq.c
@@ -839,16 +839,18 @@ sctp6_connect(struct socket *so, struct sockaddr *addr, struct thread *p)
 	uint32_t vrf_id;
 	int error = 0;
 	struct sctp_inpcb *inp;
-	struct in6pcb *inp6;
 	struct sctp_tcb *stcb;
 
 #ifdef INET
+	struct in6pcb *inp6;
 	struct sockaddr_in6 *sin6;
 	struct sockaddr_storage ss;
 
 #endif
 
+#ifdef INET
 	inp6 = (struct in6pcb *)so->so_pcb;
+#endif
 	inp = (struct sctp_inpcb *)so->so_pcb;
 	if (inp == NULL) {
 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET);