Support multiple virtual IPs on peer_cfg and ike_sa classes

src/libcharon/sa/ikev1/phase1.h

@@ -108,6 +108,14 @@ struct phase1_t {
 	 */
 	identification_t* (*get_id)(phase1_t *this, peer_cfg_t *peer_cfg, bool local);
 
+	/**
+	 * Check if peer config has virtual IPs to request
+	 *
+	 * @param peer_cfg		peer_config to check
+	 * @return				TRUE if peer config contains at least one virtual IP
+	 */
+	bool (*has_virtual_ip)(phase1_t *this, peer_cfg_t *peer_cfg);
+
 	/**
 	 * Extract and store SA payload bytes from encoded message.
 	 *