Don't flip out about that 7th bit in IPv6 (EUI-64 does it for you)❗ | Cisco CCNA 200-301 Keith Barker - The OG of IT 1 year ago Don't flip out about that 7th bit in IPv6 (EUI-64 does it for you)❗ | Cisco CCNA 200-301 EUI 64 bit flipping is something a CCNA should know about, in addition to how IPv6 addresses operate. This video provides the …