diff --git a/pkg/multicloud/openstack/eip.go b/pkg/multicloud/openstack/eip.go
index b80379db36..dd22e6ae52 100644
--- a/pkg/multicloud/openstack/eip.go
+++ b/pkg/multicloud/openstack/eip.go
@@ -177,7 +177,7 @@ func (eip *SEipAddress) GetAssociationExternalId() string {
 	if len(eip.PortId) > 0 {
 		port, err := eip.region.GetPort(eip.PortId)
 		if err != nil {
-			log.Errorf("failed to get eip port %s info", port.DeviceID)
+			log.Errorf("failed to get eip port %s info", eip.PortId)
 			return ""
 		}
 		return port.DeviceID
diff --git a/pkg/multicloud/openstack/port.go b/pkg/multicloud/openstack/port.go
index 77271f97b2..85820c59cb 100644
--- a/pkg/multicloud/openstack/port.go
+++ b/pkg/multicloud/openstack/port.go
@@ -82,7 +82,7 @@ type SPort struct {
 	Description             string
 	DeviceID                string
 	DeviceOwner             string
-	DnsAssignment           DnsAssignment
+	DnsAssignment           []DnsAssignment
 	DnsDomain               string
 	DnsName                 string
 	ExtraDhcpOpts           []ExtraDhcpOpt