@@ -12,6 +12,7 @@ import (

 	"github.com/docker/docker/pkg/graphdb"

 	"github.com/docker/engine-api/types"

 	"github.com/docker/engine-api/types/filters"

+	networktypes "github.com/docker/engine-api/types/network"

 	"github.com/docker/go-connections/nat"

 )

@@ -351,7 +352,30 @@ func (daemon *Daemon) transformContainer(container *container.Container, ctx *li

 	newC.Created = container.Created.Unix()

 	newC.Status = container.State.String()

 	newC.HostConfig.NetworkMode = string(container.HostConfig.NetworkMode)

-	newC.NetworkSettings = &types.SummaryNetworkSettings{container.NetworkSettings.Networks}

+	// copy networks to avoid races

+	networks := make(map[string]*networktypes.EndpointSettings)

+	for name, network := range container.NetworkSettings.Networks {

+		if network == nil {

+			continue

+		}

+		networks[name] = &networktypes.EndpointSettings{

+			EndpointID:          network.EndpointID,

+			Gateway:             network.Gateway,

+			IPAddress:           network.IPAddress,

+			IPPrefixLen:         network.IPPrefixLen,

+			IPv6Gateway:         network.IPv6Gateway,

+			GlobalIPv6Address:   network.GlobalIPv6Address,

+			GlobalIPv6PrefixLen: network.GlobalIPv6PrefixLen,

+			MacAddress:          network.MacAddress,

+		}

+		if network.IPAMConfig != nil {

+			networks[name].IPAMConfig = &networktypes.EndpointIPAMConfig{

+				IPv4Address: network.IPAMConfig.IPv4Address,

+				IPv6Address: network.IPAMConfig.IPv6Address,

+			}

+		}

+	}

+	newC.NetworkSettings = &types.SummaryNetworkSettings{Networks: networks}

 	newC.Ports = []types.Port{}

 	for port, bindings := range container.NetworkSettings.Ports {