Like others said, the reported IP and DNS errors can be delayed in updating. If you are at a site that mac filters, always have them enter the mac (don't forget to provide the offset mac) before booting it. But I try to always ask for an open non-captive portal connection. And yes, I have seen the WAN interfaces timeout on DHCP. The best is when the property gives a connection that allows 80/443, but nothing else. That's a real treat to diagnose because the dashboard gives all kinds of weird info. Only after you connect a PC to the port and try something like SSH does it become apparent what the issue is.
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