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我在使用 tailscale 连接两台机器，使用默认的 DERP，两台机器之间的连接是 direct, 开启了 IPV6
- tailscale ping 延迟 41ms，符合预期
tailscale ping rasp
pong from rasp (100.xx) via 36.xxx:16130 in 41ms
- ping ipv4/ipv6 延迟几百 ms，不符合预期
~ ping rasp
PING rasp.xx.net (100.xx) 56(84) bytes of data.
64 bytes from rasp.xx.net (100.xx): icmp_seq=1 ttl=64 time=446 ms
64 bytes from rasp.xx.net (100.xx): icmp_seq=2 ttl=64 time=327 ms
- tailscale netcheck
tailscale netcheck
Report:
* UDP: true
* IPv4: yes, 120.xxx:10007
* IPv6: yes, [2409:xxxx]:59714
* MappingVariesByDestIP: false
* HairPinning: false
* PortMapping:
* CaptivePortal: false
* Nearest DERP: Hong Kong
* DERP latency:
- hkg: 48.5ms (Hong Kong)
- tok: 83.7ms (Tokyo)
请问各位大佬是什么问题，该怎么解决；路由器开启了 MSS 钳制，ipv4 直连时正常，开启了 ipv6 就会有这样的问题
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