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DMA error on NIC card

C
cjbujold last edited by

We are getting occasionally the following error (Pfsense 2.2.5-RELEASE (amd64) )

alc0: DMA read error - resetting
alc0 : could not disable RxQ/TxQ ( 0x00000008)
alc0: could not disable Rx/Tx Mac (0x00000008)

What does this error indicate and is it critical and how can we fix it?

Thanks

cjb
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