`R6 acl 2000
rule permit source 192.168.1.160 0.0.0.31
int g0/0/0
rip meticin 2000 5 解决第三问
[r7]int g0/0/1
[r7-GigabitEthernet0/0/1]ip address 172.16.3.1 24 sub
[r7-GigabitEthernet0/0/1]q
[r8]int g0/0/0
[r8-GigabitEthernet0/0/0]ip address 172.16.3.2 24 sub
r7,r8环回是连续子网，需要写上述。才能访问对方的环回
`
