ifconfig:utun0:标志=8050<POINTOPOINT,RUNNING,MULTICAST> mtu 1380 inet6 fe80::a3d5:45cd:d66b:6bd5%utun0 prefixlen 64 scopeid 0x12 nd6 选项=201<PERFORMNUD,DAD>
路线:fe80::a3d5:45cd:d66b:6bd5%utun0 链接#18 UHLI lo0
sudo /sbin/ifconfig utun0 delete ifconfig: ioctl (SIOCDIFADDR): 无法分配请求的地址