sysctl net.ipv6.conf.all.forwarding=1 inside netns

control/netns_utils.go

@@ -289,11 +289,15 @@ func (ns *DaeNetns) setupSysctl() (err error) {
 		return fmt.Errorf("failed to set forwarding for dae0: %v", err)
 	}
 
-	// *_early_demux is not mandatory, but it's recommended to enable it for better performance
 	if err = netns.Set(ns.daeNs); err != nil {
 		return fmt.Errorf("failed to switch to daens: %v", err)
 	}
 	defer netns.Set(ns.hostNs)
+
+	// sysctl net.ipv6.conf.all.forwarding=1
+	SetForwarding("all", "1")
+
+	// *_early_demux is not mandatory, but it's recommended to enable it for better performance
 	sysctl.Set("net.ipv4.tcp_early_demux", "1", false)
 	sysctl.Set("net.ipv4.ip_early_demux", "1", false)
 	return