ふむ、、、。

prefered diff
http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/dev/e1000/e1000_phy.c.diff?r1=1.3;r2=1.4

colored diff
http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/dev/e1000/e1000_phy.c.diff?r1=1.3;r2=1.4;f=h