Display IP Address in /etc/issue on CentOS

I have several CentOS virtual machines that I only fire up when I need to test something, so I don't give them static IPs. For my own convenience, I added the following lines in /etc/rc.local, which get the IP Address that was leased to the machine by the DHCP server, and change /etc/issue to display it:

export IPADDR=$(ifconfig eth1 | grep 'inet ' | cut -d ':' -f 2 | cut -d ' ' -f 1)
sed -i "s/IP Address:.*/IP Address: $IPADDR/" /etc/issue

This way, once the VM boots up and gets an IP from DHCP, that IP will be displayed in the hypervisor's console.