Addendum to the loan agreement

Doesn't matter anyway, in 10 years you will exercise the special termination right because the interest rate you wanted for 30 years will blow all scales and people will already be talking again about 1-2%.

Oh... does this contract adjustment also affect the special termination right after 10 years? That would be interesting.

To my knowledge, it cannot be circumvented to the detriment of the consumer.