bugfix: Free net.IP from pool on DeletePeer

link.go

@@ -142,7 +142,28 @@ func (wg *WGLink) DeletePeer(publickey string) error {
 
 func (wg *WGLink) deletePeer(publickey wgtypes.Key) error {
     rmCfg := createARemovePeerCfg(publickey)
-    return wg.ApplyConfig(rmCfg)
+    ip, err := wg.getPeerIP(publickey)
+    if err != nil {
+        return err
+    }
+
+    err = wg.ApplyConfig(rmCfg)
+    if err != nil {
+        return err
+    }
+
+    err = wg.Free(ip)
+    if err != nil {
+        return err
+    }
+
+    return nil
+}
+
+func (wg *WGLink) getPeerIP(publickey wgtypes.Key) (net.IP, error) {
+    peer, err := wg.getPeer(publickey)
+    if err != nil { return nil, err }
+    return peer.AllowedIPs[0].IP, nil
 }
 
 func (wg *WGLink) Exists(publicKey string) (bool, error) {