Share internet with BeagleBone Black

bbb.sh

#!/bin/bash

# bbb.sh -- Share Internet with the BeagleBone Black
# using my Linux HOST as a router
bbbAddr="192.168.7.2"
hostAddr="192.168.7.1"

# Configure IP forwarding on HOST
echo "Setting up Routing"
sudo iptables -A POSTROUTING -t nat -j MASQUERADE
echo 1 | sudo tee /proc/sys/net/ipv4/ip_forward > /dev/null

echo "Configuring Router"
ssh root@$bbbAddr "/sbin/route add default gw $hostAddr"

# Add Google DNS Servers
echo "Configuring DNS"
ssh root@$bbbAddr "echo nameserver 8.8.8.8 > /etc/resolv.conf"
ssh root@$bbbAddr "echo nameserver 8.8.4.4 >> /etc/resolv.conf"

# Set date
echo "Setting Date"
ssh root@$bbbAddr "ntpdate -b -s -u pool.ntp.org"

not working, /etc/resolv.conf is rewritten at boot