vxlan: reject dynamic fdb entries that reference a nexthop id

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/vxlan/vxlan_core.c",
                        "tools/testing/selftests/net/fib_nexthops.sh"
                    ],
                    "versions": [
                        {
                            "version": "1274e1cc42264d4e629841e4f182795cb0becfd2",
                            "lessThan": "00c7f4b8144e535ffb931ad45942a1bd1315b882",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1274e1cc42264d4e629841e4f182795cb0becfd2",
                            "lessThan": "55a33882808f1402052d53a08ead59aff8af18a1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1274e1cc42264d4e629841e4f182795cb0becfd2",
                            "lessThan": "c8f29af91e0830fdabc9aa1eb1a0f898ce1bc603",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1274e1cc42264d4e629841e4f182795cb0becfd2",
                            "lessThan": "b2a8e165ddb6cd72176890b2954c52b0f6dbce1a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1274e1cc42264d4e629841e4f182795cb0becfd2",
                            "lessThan": "28f86eec851b7406a4bc6143f82aeba2882d9842",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1274e1cc42264d4e629841e4f182795cb0becfd2",
                            "lessThan": "53359916ceb649b7e6947c8c2f669368a41c1354",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1274e1cc42264d4e629841e4f182795cb0becfd2",
                            "lessThan": "3fa64d86fc64eda104e3e97721a12a42a2fd2073",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1274e1cc42264d4e629841e4f182795cb0becfd2",
                            "lessThan": "98fc57d167446b95b4e719815fe79edef93f8e7a",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                }

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/vxlan/vxlan_core.c",
                        "tools/testing/selftests/net/fib_nexthops.sh"
                    ],
                    "versions": [
                        {
                            "version": "5.8",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.8",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.271",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.222",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.189",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.158",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.111",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.53",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.7",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }