Package: gogoc
Version: 1:1.2-2
Severity: wishlist
Tags: patch
I implemented a feature for my own usage which I would like to share. It
enables gogoc to advertise subnets of the assigned network on multiple
interfaces.
The confiuration is placed in /etc/gogoc/interfaces.conf. All interfaces listed
there will get a subnet assigned in numeric order.
-- System Information:
Debian Release: 6.0.3
APT prefers stable
APT policy: (500, 'stable')
Architecture: i386 (i686)
Kernel: Linux 2.6.32-5-686-bigmem (SMP w/1 CPU core)
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
Shell: /bin/sh linked to /bin/bash
Versions of packages gogoc depends on:
ii iproute 20100519-3 networking and traffic control too
ii libc6 2.11.2-10 Embedded GNU C Library: Shared lib
ii libgcc1 1:4.4.5-8 GCC support library
ii libssl0.9.8 0.9.8o-4squeeze4 SSL shared libraries
ii libstdc++6 4.4.5-8 The GNU Standard C++ Library v3
ii net-tools 1.60-23 The NET-3 networking toolkit
Versions of packages gogoc recommends:
ii radvd 1:1.6-1.1 Router Advertisement Daemon
gogoc suggests no packages.
-- Configuration Files:
/etc/gogoc/gogoc.conf changed [not included]
/etc/init.d/gogoc changed [not included]
-- no debconf information
--- /usr/share/gogoc/template/linux.sh.vanilla 2010-04-26 14:47:03.000000000
+0200
+++ /usr/share/gogoc/template/linux.sh 2011-12-07 02:29:28.000000000 +0100
@@ -70,6 +70,31 @@
$* # Execute command
}
+SubInterfaces()
+{
+ if [ -f /etc/gogoc/interfaces.conf ] ; then
+ cat /etc/gogoc/interfaces.conf | sed -e 's/#.*$//' -e
's/[[:space:]]*$//' -e 's/^[[:space:]]//' -e '/^$/d' | nl -n ln
+ fi
+}
+
+SubNet()
+{
+ net="$1"
+ mask=64
+ test -z "$3" || mask="$3"
+ sub="$2"
+
+ subnet="`sipcalc -S "$mask" "$net" | grep '^Network' | sed -e
's/^Network[[:space:]]*-[[:space:]]//' -e 's/[[:space:]]*-[[:space:]]*$//'`"
+ if [ "$sub" -ne 0 ] ; then
+ pref="`echo "$subnet" | tail -n +2 | head -n "$sub" | tail -n 1`"
+ else
+ pref="`echo "$subnet" | head -n 1`"
+ fi
+ test -z "$pref" && return 1
+ echo "$pref" | sed 's/:0000:0000:0000:0000$//'
+}
+
+
# Program localization
Display 1 "--- Start of configuration script. ---"
@@ -138,6 +163,12 @@
# Remove address from TSP HOME INTERFACE
ExecNoCheck $ifconfig $TSP_HOME_INTERFACE inet6 del $TSP_PREFIX::1/64
+
+ subif="`SubInterfaces`"
+ echo "$subif" | while read sub int ; do
+ PREF="`SubNet "${TSP_PREFIX}::0/${TSP_PREFIXLEN}" "$sub"`"
+ ExecNoCheck $ifconfig "$int" inet6 del ${PREF}::1/64
+ done
fi
# Delete default IPv6 route(s).
@@ -245,6 +276,18 @@
Display 1 "Adding prefix to $TSP_HOME_INTERFACE"
Exec $ifconfig $TSP_HOME_INTERFACE add $TSP_PREFIX::1/64
+ subif="`SubInterfaces`"
+ echo "$subif" | while read sub int ; do
+ PREF=`echo $TSP_PREFIX | sed 's/00$//'`
+ OLDADDR=`$ifconfig "$int" | grep "inet6.* $PREF" | sed -e "s/^.*inet6
addr: //" -e "s/ Scope.*\$//"`
+ if [ ! -z $OLDADDR ]; then
+ Display 1 "Removing old IPv6 address $OLDADDR from $int"
+ Exec $ifconfig "$int" inet6 del $OLDADDR
+ fi
+ PREF="`SubNet "${TSP_PREFIX}::0/${TSP_PREFIXLEN}" "$sub"`"
+ Display 1 "Adding prefix ${PREF} to $int"
+ Exec $ifconfig "$int" inet6 add "${PREF}::1/64"
+ done
# Stop radvd daemon if it was running. Twice.
/etc/init.d/radvd stop
@@ -267,6 +310,22 @@
};
EOF
+ echo "$subif" | while read sub int ; do
+ PREF="`SubNet "${TSP_PREFIX}::0/${TSP_PREFIXLEN}" "$sub"`"
+ cat >> "$rtadvdconfigfile" <<EOF
+interface $int
+{
+ AdvSendAdvert on;
+ AdvLinkMTU 1280;
+ prefix ${PREF}::/64
+ {
+ AdvOnLink on;
+ AdvAutonomous on;
+ };
+};
+EOF
+ done
+
# Start the radvd daemon.
Display 1 "Starting radvd: $rtadvd -u radvd -C $rtadvdconfigfile"
Exec $rtadvd -u radvd -p $rtadvd_pid -C $rtadvdconfigfile
--- /dev/null 2011-11-27 19:14:56.647041867 +0100
+++ /etc/gogoc/interfaces.conf 2011-12-07 02:37:02.000000000 +0100
@@ -0,0 +1,8 @@
+#
+# Use this file to list interfaces which should get an IPv6 network
+# assigned beside the if_prefix setting in gogoc.conf
+#
+
+# Guest networks
+#eth1 # well known guests
+
