[PATCH v6] Configure the Node a routable IPv6 ULA

[Adrian Schmutzler]

Signed-off-by: Christian Dresel <fff at chrisi01.de>
Signed-off-by: Adrian Schmutzler <freifunk at adrianschmutzler.de>

Changes in v2:
 - Rebased onto keyXchange v2 patchset v15
 - correctly handle keyxchangev2data without reloading
 - added some quotes

Changes in v3:
 - Added route block
 - Inverted condition in address block
 - Changed if style to "grep -q"
 - Added some quotes

Changes in v4:
 - Optimized grep and sed

Changes in v5:
 - Only apply if ula_prefix is not empty
 - Remove escape sign from ula_prefix

Changes in v6:
 - Typo in echo
 - Optimized sed
---
 .../fff/fff-hoods/files/usr/sbin/configurehood     | 25 ++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/src/packages/fff/fff-hoods/files/usr/sbin/configurehood b/src/packages/fff/fff-hoods/files/usr/sbin/configurehood
index c18474f..ca8139e 100755
--- a/src/packages/fff/fff-hoods/files/usr/sbin/configurehood
+++ b/src/packages/fff/fff-hoods/files/usr/sbin/configurehood
@@ -161,6 +161,31 @@ if [ -s /tmp/keyxchangev2data ]; then
 			fi
 		done
 
+		# now we load the prefix from the hoodfile and set this to br-mesh
+		json_select network
+		json_get_var prefix ula_prefix
+		# Set $prefix::MAC as IP
+		if [ -n "$prefix" ] ; then
+			suffix="$(awk -F: '{ print $1$2":"$3$4":"$5$6 }' /sys/class/net/br-mesh/address)"
+			addr="$(echo "$prefix" | sed -e 's,\\,,' -e 's,/,'$suffix'/,')"
+			for ip in $(ip -6 addr show dev br-mesh | grep inet6 | grep -v -e "fe80::" -e "fdff::" | cut -f6 -d " "); do
+				ip -6 addr del "$ip" dev br-mesh
+			done
+			if ! ( ifconfig br-mesh | grep -q "$addr" ) ; then
+				ip -6 addr add "$addr" dev br-mesh
+				echo "Set ULA address to br-mesh: $addr" 
+			else
+				echo "Address already set."
+			fi
+			if ! ( ip -6 route show dev br-mesh | grep -q "fc00::" ) ; then
+				ip -6 route add fc00::/7 via fe80::1 dev br-mesh
+				echo "Set ULA route to br-mesh." 
+			else
+				echo "Route already set."
+			fi
+		fi
+		json_select ".." # back to root
+
 		echo "Loading wifi"
 		wifi
 
-- 
2.7.4