#!/bin/sh

# Get the address of the interface through which our default gateway is reached.
# This is very likely to be the correct IP to bind to most of the time.

# 'netstat -nr' prints out something that looks like this.
#Routing tables
#
#Internet:
#Destination        Gateway            Flags    Refs      Use  Netif Expire
#default            192.168.1.2        UGS         0  7840565    re0
#127.0.0.1          127.0.0.1          UH          0  1312935    lo0
IFACE=`netstat -nr | awk '/^default/ {print $6}'`
ifconfig $IFACE | grep "inet " | head -n 1 | awk '{print $2}'