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#!/bin/sh
#set -x
# (C) 2007 Canonical Ltd.
# Author: Alexander Sack <asac@jwsdot.com>
# Author: Mathieu Trudel-Lapierre <mathieu.trudel-lapierre@canonical.com>
# License: GNU General Public License, version 2 or any later version
if test x$NIF_FILE = x; then
NIF_FILE=/etc/network/interfaces
fi
auto_ifs=$(cat $NIF_FILE | \
egrep "^auto|^allow-" | \
sed -e 's/auto//' | \
sed -e 's/allow-[^ ].* //')
ifaces_to_disable=""
echo Auto interfaces found: $auto_ifs
# iterate over all auto interfaces
for i in $auto_ifs; do
if grep -q "^[[:space:]]*iface[[:space:]]\+$i[[:space:]].*\(dhcp\|auto\)" $NIF_FILE; then
ifaces_to_disable="$ifaces_to_disable $i"
echo iface to disable = $i
fi
done
backup_suffix=0
while test -e ${NIF_FILE}.bak-${backup_suffix}; do
backup_suffix=$(expr $backup_suffix + 1)
done
if [ -n "$ifaces_to_disable" ]; then
cp $NIF_FILE "$NIF_FILE.bak-${backup_suffix}"
for i in $ifaces_to_disable; do
echo -n "Disabling interface: $i ... "
sed -i -e"/^[[:space:]]*auto[[:space:]]\+$i/,/^[[:space:]]*\(auto\|mapping\|source\|allow-\)/ { /^[[:space:]]*\(auto\|iface\)[[:space:]]\+$i/ s/^/#NetworkManager#/; /^[[:space:]]*\(auto\|iface\|mapping\|source\|allow-\)/ ! s/^\([^#]\)/#NetworkManager#\1/; }" $NIF_FILE
echo done.
done
fi
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