JunOS SCU（源类）匹配在 vMX 18 上不起作用

我在虚拟游乐场测试 Junos Subscriber Manager。一切似乎都很好，并且可以在真实硬件上按预期工作。但是带有源类 sclass_mytest 选项的动态配置文件不起作用。

如果我只禁用一行“source-class sclass_mytest”，一切都会变得正常，并且客户端会收到带有应用动态配置文件的 IP 地址。

使用源类 sclass_mytest 客户端根本无法获得 IP 地址 - 因为配置文件问题。

有谁知道如何调试配置文件并查看日志错误/警告？

动态配置文件配置摘录：

firewall {
    family inet {                       
        filter "$inet_in" {
            interface-specific;
            term service {
                from {
                    service-filter-hit;
                }
                then accept;
            }
            term First{
                from {
                    source-class sclass_mytest;
                }
                then {
                    policer "$policer_in";
                    service-accounting;
                    service-filter-hit;
                    accept;
                }
            }
            term Last{                
                then accept;
            }
        }
    }
...

看起来源类在路由表中有标记：

所有带有 community: 7:1 的前缀都标有 sclass_mytest

inet.0: 29 destinations, 29 routes (29 active, 0 holddown, 0 hidden)
1.0.4.0/22 (1 entry, 1 announced)
TSI:
KRT in-kernel 1.0.4.0/22 -> {50.0.0.1}
Source class: sclass_mytest
        *BGP    Preference: 170/-191
                Next hop type: Router, Next hop index: 662
                Address: 0xc808710
                Next-hop reference count: 48
                Source: 50.0.0.1
                Next hop: 50.0.0.1 via ae0.100, selected
                Session Id: 0x142
                State: <Secondary Active Ext>
                Peer AS:  123456
                Age: 14:16      Metric: 0 
                Validation State: unverified 
                Task: BGP_123456_789.50.0.0.1
                Announcement bits (1): 0-KRT 
                AS path: 123456 I
                Communities: 7:1
                Accepted
                Localpref: 195
                Router ID: 2.21.89.1    
                Primary Routing Table testrt.inet.0