Hi, I am totally confused with IPV6 tunnelling funda. I have IPV6 on inside interface of Router R1 and R2. Both routers are connected to Real IPV4 IP. Now we have three option for tunneling-
1. IPV6IP Manual
2. IPV6IP GRE
3. IPV6IP4 Automated
In which scenario, I have to choose which one. Please help as I am not getting any perfect clue.