我的问题是，我的服务器无法访问 ipv6 网络。当我输入时，ping6 ipv6.google.com它返回connect: Network is unreachable。
ifconfig说：
eth0 Link encap:Ethernet HWaddr 96:38:ab:cb:38:9f
inet addr:46.38.255.73 Bcast:46.38.255.255 Mask:255.255.255.0
inet6 addr: fe80::9438:abff:fecb:389f/64 Scope:Link
inet6 addr: 2a03:4000:19:30::1/64 Scope:Global
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:3782146 errors:0 dropped:0 overruns:0 frame:0
TX packets:4512051 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:5766698254 (5.3 GiB) TX bytes:1145167693 (1.0 GiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:204810 errors:0 dropped:0 overruns:0 frame:0
TX packets:204810 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:222448000 (212.1 MiB) TX bytes:222448000 (212.1 MiB)
/etc/network/interfaces包含：
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
source /etc/network/interfaces.d/*
# The loopback network interface
auto lo
iface lo inet loopback
# The primary network interface
allow-hotplug eth0
iface eth0 inet dhcp
iface eth0 inet6 static
address 2a03:4000:19:30::1
netmask 64
gateway fe80::1
ip -6 route包含：
root@flosserver:/# ip -6 route
2a03:4000:19:30::/64 dev eth0 proto kernel metric 256
fe80::/64 dev eth0 proto kernel metric 256
root@flosserver:/#