这个简单192.168.29.10/242^n大于等于4需要借两位192.168.29.0/26 ip 1-62 63为广播192.168.29.64/26 ip 65-126 127为广播192.168.29.128/26 ip 129-190 191为广播192.168.29.192/26 ip 193-254 255为广播