Congestion-adaptive route selector

selectroute

#!/usr/bin/bash

DEVS=("ppp0" "ppp1")

dev_best=${DEVS[0]}
ping_best=0
for dev in ${DEVS[@]}
do
	if ! ip link show $dev 2>/dev/null > /dev/null
	then
		continue
	fi

	ping_cur=$(ping -q -I $dev -f -c 200 -s 1016 vps1.makotom.org | grep rtt | sed -e 's/^.*[[:digit:].]*\/[[:digit:].]*\/[[:digit:].]*\/\([[:digit:]][[:digit:]]*\).\([[:digit:]]\{3\}\) *.*/\1\2/g')

	if [ $ping_best -eq 0 ] || [ $ping_cur -lt $ping_best ]
	then
		dev_best=$dev
		ping_best=$ping_cur
	fi
done

ip route replace default dev $dev_best