Unable to aggregate routes during UDP transmission

[YQW1504040201]

I used client access to access the server through VPS and found that link aggregation was not possible. The iperf command used is as follows：
iperf3 -s -p 5000
iperf3 -c 47.92.231.171 -p 5000 -t 600 -b 100M -u

From the following, it can be seen that there is only one SIM card, and the other SIM cards do not share the load

But when I use TCP, multiple SIM cards will evenly share the load, just like changing the command to this：

iperf3 -s -p 5000
iperf3 -c 47.92.231.171 -p 5000 -t 600 -b 100M
Has anyone encountered a similar problem？

[Ysurac]

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