IPv6 Question

gregorio323

Hey guys,

My study partner logged into my router and put an IPv6 command that i'm not sure about he used for example 2001:1234:1234::/65 eui-64. the /65 and the eui-64 is this correct? cause all the examples i've seen and worked with were with /64 with eui-64. On the netacad website the simulator for the IPv6 shows the this i'm sure it's a type since eui-64 only works with /64
serial 0/0/0
address: 2001:410:1:10::/65 eui-64

isnt the /65 overlapping with the identifer id.