两路由器相连，链路断开后，路由器OSPFv3会删除邻居的LSA吗？

两个路由器测试OSPFv3路由协议，链路断开后，路由器是否应该删除邻居节点产生的LSA，按正常来讲，路由器本身只应该删除自己产生的LSA，其它节点的LSA应该由其它节点将LSA年龄设为最大之后，在全网洪泛删除。但实际测试中，MSR2600删除了邻居节点产生的LSA，为什么？而网上的一个开源路由协议软件为什么没有删除呢？RFC 2740 - OSPF for IPv6没有找到interface down之后或邻居down之后，路由器的行为描述，那么，路由协议的正确行为应该是什么呢？

组网图如下图所示，路由器A为MSR2600，路由器B为笔记本电脑运行Unbuntu操作系统，其上运行quagga ospf6d路由（quagga介绍：***.***/quagga/，一个用于linux平台的开源路由协议软件）：  

网线连接好后，两个路由器均同步LSDB，并生成了路由表如下：

路由器A：

[H3C]

%Jan  1 00:36:01:401 2013 H3C OSPFV3/5/OSPFv3_NBR_CHG: OSPFv3 1 Neighbor 1.1.1.1

(GigabitEthernet0/0) from Exchange to Full.

[H3C]dis ospfv3 routing

 I  - Intra area route,    E1 - Type 1 external route,    N1 - Type 1 NSSA route

 IA - Inter area route,    E2 - Type 2 external route,    N2 - Type 2 NSSA route

 *  - Selected route

            OSPFv3 Router with ID (2.2.2.2) (Process 1)

 ------------------------------------------------------------------------

 *Destination: 4001::/64

  Type       : I                                        Cost     : 1

  NextHop    : directly-connected                       Interface: GE0/0

[H3C]dis ospfv3 lsdb

            OSPFv3 Router with ID (2.2.2.2) (Process 1)

               Link-LSA (Interface GigabitEthernet0/0)

 ----------------------------------------------------------------

Link State ID   Origin Router    Age   SeqNum     CkSum  Prefix

0.0.0.2         1.1.1.1          0032  0x80000001 0xd930      1

0.16.0.0        2.2.2.2          0077  0x80000002 0x98e7      1

               Router-LSA (Area 189.189.189.189)

 ----------------------------------------------------------------

Link State ID   Origin Router    Age   SeqNum     CkSum    Link

0.0.0.0         1.1.1.1          0023  0x80000001 0x0af6      1

0.0.0.0         2.2.2.2          0022  0x80000005 0x8862      1

               Network-LSA (Area 189.189.189.189)

 ----------------------------------------------------------------

Link State ID   Origin Router    Age   SeqNum     CkSum

0.16.0.0        2.2.2.2          0017  0x80000002 0xa75c

               Intra-Area-Prefix-LSA (Area 189.189.189.189)

 ----------------------------------------------------------------

Link State ID   Origin Router    Age   SeqNum     CkSum  Prefix  Reference

0.0.0.0         1.1.1.1          0032  0x80000001 0xe09b      1  Router-LSA

0.0.0.2         2.2.2.2          0021  0x80000001 0x550d      1  Network-LSA

[H3C]

[H3C]dis ospfv3 peer

            OSPFv3 Area ID 189.189.189.189 (Process 1)

 ----------------------------------------------------------------------

Neighbor ID     Pri   State            Dead Time   Interface        Instance ID

1.1.1.1         0     Full/DROther     00:00:35    GE0/0            0

路由器B： 

ospf6d# show ipv6 ospf6 database

        Area Scoped Link State Database (Area 189.189.189.189)

Type         LSId            AdvRouter        Age   SeqNum Cksm  Len Duration

Router       0.0.0.0         1.1.1.1           98 80000001 0af6   40 00:01:37

Router       0.0.0.0         2.2.2.2           99 80000005 8862   40 00:01:32

Network      0.16.0.0        2.2.2.2           94 80000002 a75c   32 00:01:32

Intra-Prefix 0.0.0.1         2.2.2.2         3600 80000003 e68a   44 00:01:32

Intra-Prefix 0.0.0.2         2.2.2.2           98 80000001 550d   44 00:01:36

        I/F Scoped Link State Database (I/F enp2s0 in Area 189.189.189.189)

Type         LSId            AdvRouter        Age   SeqNum Cksm  Len Duration

Link         0.0.0.2         1.1.1.1          107 80000001 d930   56 00:01:47

Link         0.16.0.0        2.2.2.2          154 80000002 98e7   56 00:01:37

        AS Scoped Link State Database

Type         LSId            AdvRouter        Age   SeqNum Cksm  Len Duration

ospf6d# show ipv6 ospf6 route  

*N IA 4001::/64                      ::                        enp2s0 00:01:45

ospf6d# show ipv6 ospf6 neighbor

Neighbor ID     Pri    DeadTime  State/IfState         Duration I/F[State]

2.2.2.2           1    00:00:33   Full/DR              00:01:26 enp2s0[DROther]

之后将网线拔掉，

路由器A的路由表变为空，LSDB也变为空：

[H3C]

%Jan  1 00:38:03:691 2013 H3C IFNET/3/LINK_UPDOWN: GigabitEthernet0/0 link statu

s is DOWN.

%Jan  1 00:38:03:691 2013 H3C IFNET/5/LINEPROTO_UPDOWN: Line protocol on the int

erface GigabitEthernet0/0 is DOWN.

%Jan  1 00:38:03:691 2013 H3C OSPFV3/5/OSPFv3_NBR_CHG: OSPFv3 1 Neighbor 1.1.1.1

(GigabitEthernet0/0) from Full to Down.

[H3C]

[H3C]dis ospfv3 peer

[H3C]dis ospfv3 lsdb

            OSPFv3 Router with ID (2.2.2.2) (Process 1)

[H3C]dis ospfv3 routing

 I  - Intra area route,    E1 - Type 1 external route,    N1 - Type 1 NSSA route

 IA - Inter area route,    E2 - Type 2 external route,    N2 - Type 2 NSSA route

 *  - Selected route

            OSPFv3 Router with ID (2.2.2.2) (Process 1)

 ------------------------------------------------------------------------

[H3C]

路由器B的LSDB中仍然有路由器A产生的LSA（源路由器2.2.2.2）：

ospf6d# show ipv6 ospf6 route  

*N IA 4001::/64                      ::                        enp2s0 00:02:47

ospf6d# show ipv6 ospf6 database

        Area Scoped Link State Database (Area 189.189.189.189)

Type         LSId            AdvRouter        Age   SeqNum Cksm  Len Duration

Router       0.0.0.0         2.2.2.2          175 80000005 8862   40 00:02:48

Network      0.16.0.0        2.2.2.2          170 80000002 a75c   32 00:02:48

Intra-Prefix 0.0.0.2         2.2.2.2          174 80000001 550d   44 00:02:52

        I/F Scoped Link State Database (I/F enp2s0 in Area 189.189.189.189)

Type         LSId            AdvRouter        Age   SeqNum Cksm  Len Duration

Link         0.16.0.0        2.2.2.2          230 80000002 98e7   56 00:02:53

        AS Scoped Link State Database

Type         LSId            AdvRouter        Age   SeqNum Cksm  Len Duration

ospf6d#  

附件是两个路由器的输出。