[PATCH] fff-network: Disable IPv6 on WAN as workaround for ULA bug

[Adrian Schmutzler]

This patch disables IPv6 on WAN, so the default route does not
block the ULA access anymore.

This is a workaround until the underlying problem is fixed.

Side condition:
- The board name needs to be set up in 50-fff-boardname first

Signed-off-by: Adrian Schmutzler <freifunk at adrianschmutzler.de>

---

Not tested.
---
 .../files/etc/uci-defaults/61-disable-wan-ipv6          | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 src/packages/fff/fff-network/files/etc/uci-defaults/61-disable-wan-ipv6

diff --git a/src/packages/fff/fff-network/files/etc/uci-defaults/61-disable-wan-ipv6 b/src/packages/fff/fff-network/files/etc/uci-defaults/61-disable-wan-ipv6
new file mode 100644
index 0000000..cf7f400
--- /dev/null
+++ b/src/packages/fff/fff-network/files/etc/uci-defaults/61-disable-wan-ipv6
@@ -0,0 +1,17 @@
+#!/bin/sh
+# Copyright 2018 Adrian Schmutzler
+# License GPLv3
+
+sysctlfile="/etc/sysctl.d/90-disablewanipv6.conf"
+
+BOARD="$(uci get board.model.name)"
+. "/etc/network.$BOARD"
+
+if (! [ "$ONE_PORT" = "YES" ]) && [ "$WANDEV" = "$SWITCHDEV" ] ; then
+	WANDEV="${SWITCHDEV}.2"
+fi
+if [ -n "$WANDEV" ]; then
+	echo "net.ipv6.conf.$WANDEV.autoconf=0" > "$sysctlfile"
+	echo "net.ipv6.conf.$WANDEV.accept_ra=0" >> "$sysctlfile"
+	sysctl -p "$sysctlfile"
+fi
-- 
2.7.4