#1 libressl *does* have this now
#2 cope with openbsd ancient nameser.h

Index: res/res_rtp_asterisk.c
--- res/res_rtp_asterisk.c.orig
+++ res/res_rtp_asterisk.c
@@ -1861,7 +1861,7 @@ static int dtls_setup_rtcp(struct ast_rtp_instance *in
 
 static const SSL_METHOD *get_dtls_method(void)
 {
-#if OPENSSL_VERSION_NUMBER < 0x10002000L || defined(LIBRESSL_VERSION_NUMBER)
+#if OPENSSL_VERSION_NUMBER < 0x10002000L
 	return DTLSv1_method();
 #else
 	return DTLS_method();
@@ -9074,7 +9074,7 @@ static int store_stunaddr_resolved(const struct ast_dn
 		const unsigned char *data = (unsigned char *)ast_dns_record_get_data(record);
 		const int rr_type = ast_dns_record_get_rr_type(record);
 
-		if (rr_type == ns_t_a && data_size == 4) {
+		if (rr_type == T_A && data_size == 4) {
 			ast_rwlock_wrlock(&stunaddr_lock);
 			memcpy(&stunaddr.sin_addr, data, data_size);
 			stunaddr.sin_family = AF_INET;
