diff --git a/ucs-4.0-0/management/univention-directory-manager-modules/modules/univention/admin/handlers/networks/network.py b/ucs-4.0-0/management/univention-directory-manager-modules/modules/univention/admin/handlers/networks/network.py
index 113da0f..dfd5da6 100644
--- a/ucs-4.0-0/management/univention-directory-manager-modules/modules/univention/admin/handlers/networks/network.py
+++ b/ucs-4.0-0/management/univention-directory-manager-modules/modules/univention/admin/handlers/networks/network.py
@@ -38,6 +38,8 @@ import univention.admin.filter
 import univention.admin.handlers
 import univention.admin.localization
 
+import univention.admin.handlers.computers.computer
+
 import univention.debug
 
 translation=univention.admin.localization.translation('univention.admin.handlers.networks')
@@ -237,6 +239,12 @@ class object(univention.admin.handlers.simpleLdap):
 				raise univention.admin.uexceptions.nextFreeIp
 		self.modify()
 
+	def _ldap_post_remove(self):
+		f = univention.admin.filter.expression('univentionNetworkLink', self.dn)
+		for computer in univention.admin.handlers.computers.computer.lookup(self.co, self.lo, filter_s=f):
+			computer.open()
+			computer['network'] = ''
+			computer.modify()
 
 	def _ldap_pre_create(self):
 		self.dn='%s=%s,%s' % (mapping.mapName('name'), mapping.mapValue('name', self.info['name']), self.position.getDn())