联通公网 IPv6 跑 Iperf3 没速度

[wi11iamZ]

背景

网络环境

ISP：深圳联通 公网 IP 情况：有公网 IPv6 （ PD/64 ），IPv4 CGNAT 连接方式：桥接，路由器 PPPoE 拨号 路由系统：OpenWRT 25.12

测试设备

OS：Android 12 ISP：深圳联通 4G 公网 IP 情况：有公网 IPv6

实验

内网 v6-UDP

测试设备通过 WiFi 连接到路由器
iperf3 --client fd03:a368:97db:0:21cc:d924:6e88:a937 --port 10281 --udp --bitrate 10M
服务端 log：

[ ID] Interval           Transfer     Bitrate         Jitter    Lost/Total Datagrams
[  5]   0.00-1.00   sec  1.19 MBytes  9.99 Mbits/sec  0.226 ms  0/880 (0%)
[  5]   1.00-2.00   sec  1.19 MBytes  10.0 Mbits/sec  0.240 ms  0/881 (0%)
[  5]   2.00-3.00   sec  1.19 MBytes  10.0 Mbits/sec  0.384 ms  0/880 (0%)
[  5]   3.00-4.00   sec  1.19 MBytes  10.0 Mbits/sec  0.503 ms  0/880 (0%)
[  5]   4.00-5.00   sec  1.19 MBytes  10.0 Mbits/sec  0.400 ms  0/881 (0%)
[  5]   5.00-6.00   sec  1.19 MBytes  10.0 Mbits/sec  0.315 ms  0/880 (0%)
[  5]   6.00-7.00   sec  1.19 MBytes  10.0 Mbits/sec  0.365 ms  0/880 (0%)
[  5]   7.00-8.00   sec  1.19 MBytes  10.0 Mbits/sec  0.541 ms  0/880 (0%)
[  5]   8.00-9.00   sec  1.20 MBytes  10.0 Mbits/sec  0.344 ms  0/881 (0%)
[  5]   9.00-10.00  sec  1.19 MBytes  9.97 Mbits/sec  0.383 ms  0/878 (0%)
[  5]  10.00-10.01  sec  4.16 KBytes  6.68 Mbits/sec  0.503 ms  0/3 (0%)
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Jitter    Lost/Total Datagrams
[SUM]  0.0-10.0 sec  7 datagrams received out-of-order
[  5]   0.00-10.01  sec  11.9 MBytes  10.0 Mbits/sec  0.503 ms  0/8804 (0%)  receiver

公网 v6-TCP

测试设备切断 WiFi 走 4G iperf3 --client 2408:8256:2e05:312a:b931:7f08:bc3:13c2 --port 10281 --bitrate 10M

[ ID] Interval           Transfer     Bitrate
[  5]   0.00-1.00   sec   768 KBytes  6.29 Mbits/sec
[  5]   1.00-2.00   sec   896 KBytes  7.34 Mbits/sec
[  5]   2.00-3.00   sec  1.00 MBytes  8.39 Mbits/sec
[  5]   3.00-4.00   sec  1.38 MBytes  11.5 Mbits/sec
[  5]   4.00-5.00   sec  1.38 MBytes  11.5 Mbits/sec
[  5]   5.00-6.00   sec  1.12 MBytes  9.44 Mbits/sec
[  5]   6.00-7.00   sec  1.12 MBytes  9.44 Mbits/sec
[  5]   7.00-8.00   sec  1.00 MBytes  8.39 Mbits/sec
[  5]   8.00-9.00   sec  1.00 MBytes  8.39 Mbits/sec
[  5]   9.00-10.00  sec  1.00 MBytes  8.39 Mbits/sec
[  5]  10.00-10.31  sec   256 KBytes  6.76 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-10.31  sec  10.9 MBytes  8.85 Mbits/sec                  receiver

公网 v6-UDP

iperf3 --client 2408:8256:2e05:312a:b931:7f08:bc3:13c2 --port 10281 --udp --bitrate 10M

[ ID] Interval           Transfer     Bitrate         Jitter    Lost/Total Datagrams
[  5]   0.00-1.00   sec  0.00 Bytes  0.00 bits/sec  0.000 ms  0/0 (0%)
[  5]   1.00-2.00   sec  0.00 Bytes  0.00 bits/sec  0.000 ms  0/0 (0%)
[  5]   2.00-3.00   sec  0.00 Bytes  0.00 bits/sec  0.000 ms  0/0 (0%)
[  5]   3.00-4.00   sec  0.00 Bytes  0.00 bits/sec  0.000 ms  0/0 (0%)
[  5]   4.00-5.00   sec  0.00 Bytes  0.00 bits/sec  0.000 ms  0/0 (0%)
[  5]   5.00-6.00   sec  0.00 Bytes  0.00 bits/sec  0.000 ms  0/0 (0%)
[  5]   6.00-7.00   sec  0.00 Bytes  0.00 bits/sec  0.000 ms  0/0 (0%)
[  5]   7.00-8.00   sec  0.00 Bytes  0.00 bits/sec  0.000 ms  0/0 (0%)
[  5]   8.00-9.00   sec  0.00 Bytes  0.00 bits/sec  0.000 ms  0/0 (0%)
[  5]   9.00-10.00  sec  0.00 Bytes  0.00 bits/sec  0.000 ms  0/0 (0%)
[  5]  10.00-11.00  sec  0.00 Bytes  0.00 bits/sec  0.000 ms  0/0 (0%)
[  5]  11.00-12.00  sec  0.00 Bytes  0.00 bits/sec  0.000 ms  0/0 (0%)
[  5]  12.00-13.00  sec  0.00 Bytes  0.00 bits/sec  0.000 ms  0/0 (0%)
[  5]  13.00-14.00  sec  0.00 Bytes  0.00 bits/sec  0.000 ms  0/0 (0%)
[  5]  14.00-15.00  sec  0.00 Bytes  0.00 bits/sec  0.000 ms  0/0 (0%)
[  5]  15.00-16.00  sec  0.00 Bytes  0.00 bits/sec  0.000 ms  0/0 (0%)
[  5]  16.00-17.00  sec  0.00 Bytes  0.00 bits/sec  0.000 ms  0/0 (0%)
[  5]  17.00-18.00  sec  0.00 Bytes  0.00 bits/sec  0.000 ms  0/0 (0%)
[  5]  18.00-19.00  sec  0.00 Bytes  0.00 bits/sec  0.000 ms  0/0 (0%)
[  5]  19.00-20.00  sec  0.00 Bytes  0.00 bits/sec  0.000 ms  0/0 (0%)
[  5]  20.00-21.00  sec  0.00 Bytes  0.00 bits/sec  0.000 ms  0/0 (0%)
[  5]  21.00-22.00  sec  0.00 Bytes  0.00 bits/sec  0.000 ms  0/0 (0%)
[  5]  22.00-23.00  sec  0.00 Bytes  0.00 bits/sec  0.000 ms  0/0 (0%)
[  5]  23.00-24.00  sec  0.00 Bytes  0.00 bits/sec  0.000 ms  0/0 (0%)
[  5]  24.00-25.00  sec  0.00 Bytes  0.00 bits/sec  0.000 ms  0/0 (0%)
[  5]  25.00-26.00  sec  0.00 Bytes  0.00 bits/sec  0.000 ms  0/0 (0%)
......

问题

运营商限制了 UDP 入站？但是 ncat 测试端口是 OK 的

[busier]

ncat 测试你怎么测试的？ udp 这种无连接协议要在应用层面测试响应。

iperf3 这种应用层测试要靠谱些

或者你直接用其它 udp 业务试试

[scarh]

换一个端口试试