eth0 and eth1 disappeared on Red Hat

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http://www.unix.com – Good morning, I've Red Hat 5.7 on HP Blade BL460C G7. Till yesterday I had 4 network devices configured as following: bond0 = eth0 + eth1 bond1 = eth2 + eth3 This morning without apparent reason the eth0 and eth1 seems dead and the Blade are unreachable (I can login only using ILO). I double check the hardware, and BIOS correctly seen the network cards, so something goes wrong on red hat. I already try to reboot the system without success. Any advice to restore the devices eth0 and eth1? Thanks! Lucas (HowTos)