ip6: vti: Use ip6_tnl.net in vti6_changelink().

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/ipv6/ip6_vti.c"
                    ],
                    "versions": [
                        {
                            "version": "61220ab349485d911083d0b7990ccd3db6c63297",
                            "lessThan": "0cdce7618464f7fb06f461e8f4ad575cb1d570f4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "61220ab349485d911083d0b7990ccd3db6c63297",
                            "lessThan": "f5c68875e25f331e497ddfbe81e2d8163a87f136",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "61220ab349485d911083d0b7990ccd3db6c63297",
                            "lessThan": "d9c5eecdb3c740e65038651db7c686b10d76d1bc",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "61220ab349485d911083d0b7990ccd3db6c63297",
                            "lessThan": "f1e89a943ee574d0f2f16246eb3f2d7330fdeb03",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "61220ab349485d911083d0b7990ccd3db6c63297",
                            "lessThan": "225b467e3b631f38be22e4b38062a1fed02fdd21",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "61220ab349485d911083d0b7990ccd3db6c63297",
                            "lessThan": "fc32be9ac2788524c6b24efd681cce7a6e731a92",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "61220ab349485d911083d0b7990ccd3db6c63297",
                            "lessThan": "ee1778ba0f5cb53be771f97017d01eb356c797bf",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "61220ab349485d911083d0b7990ccd3db6c63297",
                            "lessThan": "11b326fb0a374f4654f9be22d0f0f7abd9f7d3fe",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                }

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/ipv6/ip6_vti.c"
                    ],
                    "versions": [
                        {
                            "version": "3.15",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "3.15",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.259",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.210",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.176",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.143",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.93",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.35",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0.12",
                            "lessThanOrEqual": "7.0.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }