diff --git a/ifupdown2/addons/address.py b/ifupdown2/addons/address.py
index 83974d7..d738f49 100644
--- a/ifupdown2/addons/address.py
+++ b/ifupdown2/addons/address.py
@@ -956,7 +956,7 @@ class address(Addon, moduleBase):
             # (if intf was moved from static config to dhcp)
             for old_ifaceobj in statemanager.statemanager_api.get_ifaceobjs(ifaceobj.name) or []:
                 for addr in old_ifaceobj.get_attr_value("address") or []:
-                    self.netlink.addr_del(ifaceobj.name, addr)
+                    self.netlink.addr_del(ifaceobj.name, IPNetwork(addr))
 
         self.process_mtu(ifaceobj, ifaceobj_getfunc)