使用TextFSM解析设备层级PCC过滤数据遇到困难，寻求正确解析方案

我在用TextFSM解析某设备的层级式配置数据时卡壳了——数据是按pcc-filter-base-name分组的，每个分组下面包含多个filter条目，每个filter都有自己的属性集合。我希望最终能把每个filter和它所属的filter-base关联起来，形成结构化的解析结果，但目前的尝试完全达不到预期。

待解析的原始数据 #

pcc-filter-base-name : P2P-BASE
filter = 1337x
filter-state = enabled
flow-inactivity-time = 0
flow-initiation = uplink
l7-uri = 1337x:
precedence = 1
protocol-id = 0
filter = abc
filter-state = enabled
flow-inactivity-time = 0
flow-initiation = uplink
l7-uri = abc:
precedence = 2
protocol-id = 0
filter = adc
filter-state = enabled
flow-inactivity-time = 0
flow-initiation = uplink
l7-uri = adc:
precedence = 3
protocol-id = 0
pcc-filter-base-name : FACEBOOK_FLEX-BASE
filter = IP_NET_1
destination-address = 157.240.24.32/29
destination-port-list = 80,443
filter-state = enabled
flow-inactivity-time = 0
flow-initiation = uplink
precedence = 1
protocol-id = 0
filter = IP_NET_2
destination-address = 157.240.25.32/29
destination-port-list = 80,443
filter-state = enabled
flow-inactivity-time = 0
flow-initiation = uplink
precedence = 2
protocol-id = 0
filter = IP_NET_3
destination-address = 157.240.26.32/29
destination-port-list = 80,443
filter-state = enabled
flow-inactivity-time = 0
flow-initiation = uplink
precedence = 3
protocol-id = 0

我尝试的TextFSM模板 #

Value Filldown filter_base_name (\S+)
Value Required filter (\S+)
Value filter_state (\S+)
Value flow_inactivity_time (\S+)
Value flow_initiation (\S+)
Value l7_uri (\S+)
Value Required precedence (\S+)
Value protocol_id (\S+)
Value destination_address (\S+)
Value destination_port_list (\S+)

Start
^pcc-filter-base-name : ${filter_base_name} -> Filter

Filter
^filter = ${filter}
^filter-state = ${filter_state}
^flow-inactivity-time = ${flow_inactivity_time}
^flow-initiation = ${flow_initiation}
^l7-uri = ${l7_uri}
^precedence = ${precedence}
^protocol-id = ${protocol_id}
^destination-address = ${destination_address}
^destination-port-list = ${destination_port_list}
^pcc-filter-base-name : ${filter_base_name} -> Record Start

遇到的问题 #

解析结果和预期相差甚远，我想要的是每个filter条目都带上它所属的filter_base_name，比如1337x这条filter要关联到P2P-BASE，IP_NET_1关联到FACEBOOK_FLEX-BASE。但现在的模板要么漏数据，要么关联错误。我已经调整过好几次状态跳转和字段定义，都没解决问题，甚至有点怀疑TextFSM是不是适合处理这种层级关联的场景？

恳请各位大佬帮忙看看问题出在哪，或者有没有更合适的处理方式？

内容的提问来源于stack exchange，提问作者redcode