### 以系統管理員執行CMD

# 檢查網路前綴訪問優先順序
netsh interface ipv6 show prefixpolicies

# 調整網路前綴優先順序，優先使用IPv4
netsh interface ipv6 set prefixpolicy ::ffff:0:0/96 60 4
# netsh interface ipv6 set prefixpolicy ::ffff:0:0/96 35 4

# 再次檢查網路前綴訪問優先順序
netsh interface ipv6 show prefixpolicies

# 重設IPv6策略
netsh interface ipv6 reset

# 重設IPv6 DNS
nameserver 1.1.1.1
nameserver 101.101.101.101
nameserver 2606:4700:4700::1111
nameserver 2001:de4::101

# netsh int ipv6 set address "乙太網路" 2607:f130:0:f0::1a5/64
netsh interface ipv4 set dnsservers name="乙太網路" static 1.1.1.1 primary
netsh interface ipv4 add dnsservers name="乙太網路" 101.101.101.101 index=2
netsh interface ipv6 set dnsservers name="乙太網路" static 2606:4700:4700::1111 primary
netsh interface ipv6 add dnsservers name="乙太網路" 2001:de4::101 index=2

# 重設網路
ipconfig /release
start /wait ipconfig /renew
start /wait ipconfig /flushdns

# 檢查網路
ipconfig /all
# 檢查IPv6路由表
route print -6
# 檢查路由
netsh int ipv6 show route
# 檢測IPv6連線能力
ping -6 google.com
tracert -6 google.com
ping -6 dns.quad9.net
tracert -6 dns.quad9.net

> https://ipv6.tc.edu.tw
> https://test-ipv6.com/index.html.zh_TW
> https://www.netvigator.com/chi/ipv6/nna.html