wip: disable IPv6 by default on workspaces nodes

Author: geropl

components/docker-up/docker-up/main.go

@@ -132,9 +132,13 @@ func runWithinNetns() (err error) {
 	args = append(args, fmt.Sprintf("--mtu=%v", netIface.Attrs().MTU))
 	// configure docker0 MTU (used as control plane, not related to containers)
 	args = append(args, fmt.Sprintf("--network-control-plane-mtu=%v", netIface.Attrs().MTU))
+	// configure docker0 MTU (used as control plane, not related to containers)
+
+	args = append(args, "--ip6tables=false")
+	//args = append(args, "--default-network-opt=bridge=com.docker.network.enable_ipv6=true")
 
-	// cmp. ENT-324: Required to run dockerd >= 26.1 in a Gitpod workspace
-	os.Setenv("DOCKER_ALLOW_IPV6_ON_IPV4_INTERFACE", "1")
+	// // cmp. ENT-324: Required to run dockerd >= 26.1 in a Gitpod workspace
+	// os.Setenv("DOCKER_ALLOW_IPV6_ON_IPV4_INTERFACE", "1")
 
 	if listenFDs > 0 {
 

install/installer/pkg/components/ws-daemon/daemonset.go

@@ -57,7 +57,8 @@ func daemonset(ctx *common.RenderContext) ([]runtime.Object, error) {
 	sysctl -w "net.ipv4.tcp_tw_reuse=1" &&
 	sysctl -w fs.inotify.max_user_watches=1000000 &&
 	sysctl -w "kernel.dmesg_restrict=1" &&
-	sysctl -w vm.unprivileged_userfaultfd=0
+	sysctl -w vm.unprivileged_userfaultfd=0 &&
+	sysctl -w net.ipv6.conf.default.disable_ipv6=1
 ) && echo "done!" || echo "failed!"
 `,
 			},