Not Working Scenario (CIDR /64)

restconf/config/opendaylight-inventory:nodes 

{
                                "id": "Ingress_ICMPv6_392318374877_1_fe80:0:0:0:f816:3eff:fec5:d45f_134_LinkLocal_Permit_",
                                "priority": 63010,
                                "table_id": 240,
                                "hard-timeout": 0,
                                "installHw": true,
                                "match": {
                                    "ethernet-match": {
                                        "ethernet-type": {
                                            "type": 34525
                                        }
                                    },
                                    "ip-match": {
                                        "ip-protocol": 58
                                    },
                                    "icmpv6-match": {
                                        "icmpv6-code": 0,
                                        "icmpv6-type": 134
                                    },
                                    "openflowplugin-extension-general:extension-list": [
                                        {
                                            "extension-key": "openflowplugin-extension-nicira-match:nxm-nx-reg6-key",
                                            "extension": {
                                                "openflowplugin-extension-nicira-match:nxm-nx-reg": {
                                                    "reg": "nicira-match:nxm-nx-reg6",
                                                    "mask": 268435200,
                                                    "value": 256
                                                }
                                            }
                                        }
                                    ],
                                    "ipv6-source": "fe80:0:0:0:f816:3eff:fec5:d45f/64"
                                },
                                "strict": false,
                                "cookie": 110100480,
                                "flow-name": "ACL",
                                "instructions": {
                                    "instruction": [
                                        {
                                            "order": 0,
                                            "apply-actions": {
                                                "action": [
                                                    {
                                                        "order": 0,
                                                        "openflowplugin-extension-nicira-action:nx-resubmit": {
                                                            "table": 220
                                                        }
                                                    }
                                                ]
                                            }
                                        }
                                    ]
                                },
                                "idle-timeout": 0,
                                "barrier": false
                            }

Working Scenario (CIDR /128)

restconf/config/opendaylight-inventory:nodes 

                     {
                                "id": "Ingress_ICMPv6_392318374877_1_fe80:0:0:0:f816:3eff:fe18:bde2_134_LinkLocal_Permit_",
                                "priority": 63010,
                                "table_id": 240,
                                "hard-timeout": 0,
                                "installHw": true,
                                "match": {
                                    "ethernet-match": {
                                        "ethernet-type": {
                                            "type": 34525
                                        }
                                    },
                                    "ip-match": {
                                        "ip-protocol": 58
                                    },
                                    "icmpv6-match": {
                                        "icmpv6-code": 0,
                                        "icmpv6-type": 134
                                    },
                                    "openflowplugin-extension-general:extension-list": [
                                        {
                                            "extension-key": "openflowplugin-extension-nicira-match:nxm-nx-reg6-key",
                                            "extension": {
                                                "openflowplugin-extension-nicira-match:nxm-nx-reg": {
                                                    "reg": "nicira-match:nxm-nx-reg6",
                                                    "mask": 268435200,
                                                    "value": 256
                                                }
                                            }
                                        }
                                    ],
                                    "ipv6-source": "fe80:0:0:0:f816:3eff:fe18:bde2/128"
                                },
                                "strict": false,
                                "cookie": 110100480,
                                "flow-name": "ACL",
                                "instructions": {
                                    "instruction": [
                                        {
                                            "order": 0,
                                            "apply-actions": {
                                                "action": [
                                                    {
                                                        "order": 0,
                                                        "openflowplugin-extension-nicira-action:nx-resubmit": {
                                                            "table": 220
                                                        }
                                                    }
                                                ]
                                            }
                                        }
                                    ]
                                },
                                "idle-timeout": 0,
                                "barrier": false
                            }