(1)①172.19.17.0/29②172.19.17.8/29③172.19.4.0/22④172.19.52.0/22(2)172.19.63.193 172.19.63.194此题考虑无类别域间路由(CIDR)问题
(1)172.19.17.0/29172.19.17.8/29172.19.4.0/22172.19.52.0/22(2)172.19.63.193172.19.63.194