fix

.Module.symvers.cmd

@@ -0,0 +1 @@
+savedcmd_Module.symvers :=  /usr/lib/modules/7.1.2-arch3-1/build/scripts/mod/modpost -M    -a    -N -W -o Module.symvers -n -T modules.order -i /usr/lib/modules/7.1.2-arch3-1/build/Module.symvers -e 

.etherip6.ko.cmd

@@ -0,0 +1 @@
+savedcmd_etherip6.ko := ld -r -m elf_x86_64 -z noexecstack --no-warn-rwx-segments --build-id=sha1  -T /usr/lib/modules/7.1.2-arch3-1/build/scripts/module.lds -o etherip6.ko etherip6.o etherip6.mod.o .module-common.o

.etherip6.mod.cmd

@@ -0,0 +1 @@
+savedcmd_etherip6.mod := printf '%s\n'   etherip6.o | awk '!x[$$0]++ { print("./"$$0) }' > etherip6.mod

.modules.order.cmd

@@ -0,0 +1 @@
+savedcmd_modules.order := {   echo etherip6.o; :; } > modules.order

etherip6.c

@@ -263,6 +263,7 @@ static netdev_tx_t etherip6_xmit(struct sk_buff *skb, struct net_device *dev)
 	struct pcpu_sw_netstats *stats;
 	__be16 *etherip;
 	unsigned int payload_len;
+	unsigned int inner_len;
 	int headroom;
 	int err;
 
@@ -290,6 +291,7 @@ static netdev_tx_t etherip6_xmit(struct sk_buff *skb, struct net_device *dev)
 	}
 
 	payload_len = skb->len + ETHERIP6_HLEN;
+	inner_len = skb->len;
 
 	etherip = skb_push(skb, ETHERIP6_HLEN);
 	*etherip = ETHERIP6_HDR;
@@ -318,13 +320,19 @@ static netdev_tx_t etherip6_xmit(struct sk_buff *skb, struct net_device *dev)
 	 */
 	memset(skb->cb, 0, sizeof(struct inet6_skb_parm));
 
+	err = ip6_local_out(net, NULL, skb);
+	if (unlikely(net_xmit_eval(err))) {
+		atomic_long_inc(&tun->tx_dropped);
+		return NETDEV_TX_OK;
+	}
+
 	stats = this_cpu_ptr(tun->stats);
 	u64_stats_update_begin(&stats->syncp);
 	u64_stats_inc(&stats->tx_packets);
-	u64_stats_add(&stats->tx_bytes, payload_len - ETHERIP6_HLEN);
+	u64_stats_add(&stats->tx_bytes, inner_len);
 	u64_stats_update_end(&stats->syncp);
 
-	return ip6_local_out(net, NULL, skb) == 0 ? NETDEV_TX_OK : NETDEV_TX_OK;
+	return NETDEV_TX_OK;
 
 tx_error:
 	atomic_long_inc(&tun->tx_dropped);

etherip6.mod

@@ -0,0 +1 @@
+./etherip6.o

etherip6.mod.c

@@ -0,0 +1,21 @@
+#include <linux/module.h>
+#include <linux/export-internal.h>
+#include <linux/compiler.h>
+
+MODULE_INFO(name, KBUILD_MODNAME);
+
+__visible struct module __this_module
+__section(".gnu.linkonce.this_module") = {
+	.name = KBUILD_MODNAME,
+	.init = init_module,
+#ifdef CONFIG_MODULE_UNLOAD
+	.exit = cleanup_module,
+#endif
+	.arch = MODULE_ARCH_INIT,
+};
+
+
+MODULE_INFO(depends, "");
+
+
+MODULE_INFO(srcversion, "481F4CF394EABC790E50EAD");

modules.order

@@ -0,0 +1 @@
+etherip6.o