[debid] Help....eth tiba2 ilang...

Dear all....
Saya punya satu box debian buat jadi router sederhana, dengan 2 ethernet
card.
Smalem baik2 saja, tapi setelah di restart muncul error ky gini :

Reconfiguring network interfaces...SIOCSIFADDR: No such device
eth0: ERROR while getting interface flags: No such device
SIOCSIMNETMASK: No such device
eth0: ERROR while getting interface flags: No such device
Failed to bring up eth0.
SIOCSIFADDR: No such device
eth1: ERROR while getting interface flags: No such device
SIOCSIFNETMASK: No such device
eth1: ERROR while getting interface flags: No such device
Failed to bring up eth1.

Login si bisa, tapi networking blas ga berfungsi...
diketikin ifconfig -a yg muncul cuman lo dan sit0

Sebelumnya sempet setting hostname berbeda untuk kedua network card, apakah
ini penyebab kesalahannya?
misal
eth0 = widuri
eth1 = masitah

tulung ya yg punya pengalaman, sambil sy jg googling...sapa tau disini ada
yg pengalaman..

thanx before


kindly regards,

Riyandi Himawan