IPv6-in-IPv4 tunneling (RFC 4213) allows an attacker to spoof and route traffic via an exposed network interface.Referenceshttps://datatracker.ietf.org/doc/html/rfc4213https://papers.mathyvanhoef.com/usenix2025-tunnels.pdfhttps://www.top10vpn.com/research/tunneling-protocol-vulnerability/
