Given that this was several months ago, I'm sure you've recovered by now. However, we also hit this issue when upgrading from 7.1.5.N1.1 to 7.3.3.N1.1. Our first Nexus 5548UP went fine, however the second one exhibited this bug and caused a nice ou...
". For IOS devices on 11.X our wireless architect found a setting in the guest anchor configuration that resolved the issue for our 11.0.X & 11.1.1 IOS devices and Androids that were having the issue too."
..... and what was this setting?
I'm hoping you are someone is still watching this thread. I have a question regarding the last tip.If I create a null0 route for a static route that I already had, then I now have 2 equal cost routes to the target subnet (192.168.1.0 in your example...
