It shouldn't be a problem.
I had this same problem in Fedora FC1. Since they're both based on Red Hat, our problems might be the same.
My eth0 error started showing up after I attemped to update my kernel to 2.6. I had an alias eth0 statements in my both /etc/modprobe.conf and /etc/modules.conf. I removed the statement from one of the files (I think modules.conf) and I quit getting the error.
I don't know if this will solve your problem or not, but it's worth a try. Just remember to backup whatever file you edit incase my idea doesn't work