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ASAv created from VMWare files defaults vNIC drivers to e1000.
Create new ASAv using VMWare files.
After ASAv has been created on VMWare, edit the On VSpehere navigate to Edit Settings > Expand each network adapter > Under adapter type select another option of the supported drivers that is not e1000. Supported drivers:
Note that VMware no longer recommends using the E1000 driver: https://www.cisco.com/c/en/us/td/docs/security/asa/asa910/asav/quick-start-book/asav-910-qsg/asav_intro.html
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