Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
22.6 you may not assign , transfer or delegate this agreement and your rights and obligations hereunder without airbnb 's prior written consent . 

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. OPTIONS: ["None", "Unilateral termination", "Jurisdiction", "Unilateral change", "Choice of law", "Limitation of liability", "Contract by using", "Content removal", "Arbitration"].