Question: where does ipsec reside in a protocol stack
[{'answer': 'Internet Layer', 'provenance': [{'wikipedia_id': '43342', 'title': 'IPsec', 'start_paragraph_id': 4, 'start_character': 134, 'end_paragraph_id': 4, 'end_character': 148, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]