From a quick look on a fresh ubuntu small server install it does not seem there is much that reference eth* scheme : ~$ sudo egrep -Irl 'eth[0-9]' /etc /usr

From a quick look on a fresh ubuntu small server install it does not seem there is much that reference eth* scheme : ~$ sudo egrep -Irl 'eth[0-9]' /etc /usr 2>/dev/null |wc -l 27