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#! /bin/bash
#
# Usage: vyatta-link-detect devicename on|off
#
usage() {
echo "Usage: $0 devicename {on|off}"
exit 1
}
if [ $# -ne 2 ]; then
usage
fi
# Note can't use sysctl it is broken for vif name because of dots
# link_filter values:
# 0 - always receive
# 1 - ignore receive if admin_down
# 2 - ignore receive if admin_down or link down
set-sysctl () {
if [ -f /proc/sys/net/ipv4/conf/$1/link_filter ]; then
sudo sh -c "echo $2 >/proc/sys/net/ipv4/conf/$1/link_filter"
fi
# sudo sh -c "echo $2 >/proc/sys/net/ipv6/conf/$1/link_filter"
}
case $2 in
on) set-sysctl $1 2
if [ -f /usr/sbin/zebra ]; then
exec vtysh -c "configure terminal" -c "interface $1" \
-c "link-detect"
fi ;;
off) set-sysctl $1 1
if [ -f /usr/sbin/zebra ]; then
exec vtysh -c "configure terminal" -c "interface $1" \
-c "no link-detect"
fi ;;
*) usage;;
esac
# not reached
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