<![CDATA[DMA error on NIC card]]>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

]]>https://forum.netgate.com/topic/92685/dma-error-on-nic-cardRSS for NodeWed, 12 Aug 2026 21:30:15 GMTMon, 07 Dec 2015 11:59:41 GMT60