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mqtt multiple ipv6 links

Hi!

I have two PCA10040 boards and I'm running the MQTT publisher example in both using a Raspberry Pi 3 Model B as a gateway.

Therefore, both boards are establishing and IPV6 link and transmitting the information to the gateway. They are publishing in different topics. After that, the gateway forward the information to the cloud.

The problem comes now. I realized that two IPv6 links can't be established at the same time. So, when one board is publishing the other one has to disconnected. Why is it happening? It is because the raspberry is not capable of handling two IPv6 connection at the same time?

Thanks!

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