ABR in Stub area not blocking External Routes

ABR in Stub area not blocking External Routes

In the topology above I have configured R2 area 1 as stub the same for R3
R3 is blocking External Routes E2 and injecting IA default routes, but R2 is still allowing E2 [External routes]

R2#sh run | sec ospf
router ospf 1
 area 1 stub
 network 192.168.12.0 0.0.0.255 area 0
 network 192.168.23.0 0.0.0.255 area 1
R2#

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R3#sh run | sec ospf
router ospf 1
 area 1 stub
 network 192.168.23.0 0.0.0.255 area 1
R3#

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R2#sh ip route ospf
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2
       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
       ia - IS-IS inter area, * - candidate default, U - per-user static route
       o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP
       a - application route
       + - replicated route, % - next hop override

Gateway of last resort is not set

      7.0.0.0/32 is subnetted, 1 subnets
O E2     7.7.7.7 [110/20] via 192.168.12.1, 00:41:55, Ethernet0/0
      9.0.0.0/32 is subnetted, 1 subnets
O E2     9.9.9.9 [110/20] via 192.168.12.1, 00:41:55, Ethernet0/0
      11.0.0.0/32 is subnetted, 1 subnets
O E2     11.11.11.11 [110/20] via 192.168.12.1, 00:41:55, Ethernet0/0
O     192.168.14.0/24 [110/20] via 192.168.12.1, 00:41:55, Ethernet0/0
O     192.168.16.0/24 [110/20] via 192.168.12.1, 00:41:55, Ethernet0/0
O     192.168.18.0/24 [110/20] via 192.168.12.1, 00:41:55, Ethernet0/0
O IA  192.168.45.0/24 [110/30] via 192.168.12.1, 00:41:55, Ethernet0/0
O IA  192.168.67.0/24 [110/30] via 192.168.12.1, 00:41:55, Ethernet0/0
O IA  192.168.89.0/24 [110/30] via 192.168.12.1, 00:41:55, Ethernet0/0
O     192.168.110.0/24 [110/20] via 192.168.12.1, 00:41:55, Ethernet0/0
O IA  192.168.111.0/24 [110/30] via 192.168.12.1, 00:41:55, Ethernet0/0
O     192.168.112.0/24 [110/20] via 192.168.12.1, 00:41:55, Ethernet0/0
R2#

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R3#sh ip route ospf
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2
       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
       ia - IS-IS inter area, * - candidate default, U - per-user static route
       o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP
       a - application route
       + - replicated route, % - next hop override

Gateway of last resort is 192.168.23.2 to network 0.0.0.0

O*IA  0.0.0.0/0 [110/11] via 192.168.23.2, 00:06:26, Ethernet0/0
O IA  192.168.12.0/24 [110/20] via 192.168.23.2, 00:06:26, Ethernet0/0
O IA  192.168.14.0/24 [110/30] via 192.168.23.2, 00:06:26, Ethernet0/0
O IA  192.168.16.0/24 [110/30] via 192.168.23.2, 00:06:26, Ethernet0/0
O IA  192.168.18.0/24 [110/30] via 192.168.23.2, 00:06:26, Ethernet0/0
O IA  192.168.45.0/24 [110/40] via 192.168.23.2, 00:06:26, Ethernet0/0
O IA  192.168.67.0/24 [110/40] via 192.168.23.2, 00:06:26, Ethernet0/0
O IA  192.168.89.0/24 [110/40] via 192.168.23.2, 00:06:26, Ethernet0/0
O IA  192.168.110.0/24 [110/30] via 192.168.23.2, 00:06:26, Ethernet0/0
O IA  192.168.111.0/24 [110/40] via 192.168.23.2, 00:06:26, Ethernet0/0
O IA  192.168.112.0/24 [110/30] via 192.168.23.2, 00:06:26, Ethernet0/0
R3#

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