diff --git a/libnetwork/Dockerfile b/libnetwork/Dockerfile
index 20a04a437f..89302519b1 100644
--- a/libnetwork/Dockerfile
+++ b/libnetwork/Dockerfile
@@ -1,6 +1,6 @@
-ARG GO_VERSION=1.12.6
+ARG GO_VERSION=1.12.8
 
-FROM golang:${GO_VERSION} as dev
+FROM golang:${GO_VERSION}-stretch as dev
 RUN apt-get update && apt-get -y install iptables \
 		protobuf-compiler
 
diff --git a/libnetwork/osl/namespace_linux.go b/libnetwork/osl/namespace_linux.go
index 3e3e5f620c..ed44311418 100644
--- a/libnetwork/osl/namespace_linux.go
+++ b/libnetwork/osl/namespace_linux.go
@@ -681,7 +681,7 @@ func (n *networkNamespace) ApplyOSTweaks(types []SandboxType) {
 	for _, t := range types {
 		switch t {
 		case SandboxTypeLoadBalancer:
-			n.InvokeFunc(func() { kernel.ApplyOSTweaks(loadBalancerConfig) })
+			kernel.ApplyOSTweaks(loadBalancerConfig)
 		}
 	}
 }