Problems with acks of ConfirmedDataup

[Luis_Torres]

Hello Brocaar,
You mention here:

Lora-gateway-bridge sends downlink messages to incorrect gateway port

Hi, I have set up (on Ubuntu using the available apt packages) loraserver (loraserver, lora-app-server, lora-gateway-bridge) and configured everything and am receiving packets from a test node. I have run a tcpdump to capture the packets to and from my gateway (Tektelic pico gateway) and I see lora rx frames (encapsulated in a UDP packet) going to port 1700 of my loraserver setup, which is correct. However, the packets my test node are sending are confirmed frames, and when the “ack” downlink …

Problems about elastic IP for Downlinks. We have a vmware server with fixed IP.
If the Gateway is 4G connected downlinks are ok. At less with our operator. If we change to Ethernet we started to lose downlinks. First only one downlink every 4 Uplinks and after 30 minutes no downlink.
Initially, we suspect routers and port forwarding but it looks ok.
Can I have problems if the gateway uses IPV6 frames instead Ipv4 or something related?

[Luis_Torres]

Solved. Finally loopback network problems. Two different places for Gateway and Server but VPN interconnected. After a while downlink fails. Outside the VPN level or outside this network all is ok the same as with 4G.