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#!/bin/sh
#
# by Andrew McMillan, Catalyst IT Ltd, (c) 2001 licensed
# for use under the GPL version 2
#
# Turn on execution tracing, for debugging...
[ "$DEBUGWHEREAMI" = "1" ] && set -o xtrace
ifconfig $1 up
#
# Use apparently more reliable mii-tool...
if [ -x /sbin/mii-tool ] ; then
/sbin/mii-tool $1 2>&1 | grep "link ok" >/dev/null && exit 0
# Don't exit on failure unless we confirm that mii-tool was supported
# since it won't work on many modern Gb cards...
/sbin/mii-tool $1 2>&1 | grep "Operation not supported" >/dev/null || exit 1
fi
if [ -x /usr/sbin/ethtool ] ; then
# Fall back to ethtool, which can give false positives on this
/usr/sbin/ethtool $1 2>&1 | grep "Link detected: yes" >/dev/null && exit 0
fi
# Interface is not connected - bring it down to remove it from
# routing table
ifconfig $1 down
exit 1
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