The release note of IOS 15.1.(2)T mentioned that the support ikev2 is available. However, when

i used the Feature navigator it shows that ikev2 support is unavailable in ISR G1 router series. I could only found the support of ikev2 with the combination of ISR G2 and IOS 15.1(2)T. Hence, I would like to seek confirmation on the support of ikev2 on ISR G1 platform is indeed not supported?

Thanks