If the topology being used is Bridged@AP, disabling "ARP Proxy" for any affected topologies should resolve this issue (see below):
If you are using topologies that are Bridged@WirelessController, ARP Proxy is enabled by default and you cannot disable it. Transitioning to B@AP topologies from B@WC topologies is possible, and in some ways and for some customer situations, may even be a more advantageous design choice in terms of overall traffic distribution for wireless clients. If you need assistance making that transition, please call GTAC at 800-872-8440 so we can open a case and assist you in that effort.
Other "solutions" that may work for you:
- While the issue is happening, do a packet capture for 5-10 minutes. Load it up in Wireshark, and filter by the following:
icmp && eth.addr == ff:ff:ff:ff:ff:ff
This will most likely give you a few icmp packets sourced from MurataMa MAC address, which in our case turned out to be a Samsung S10 device. Block it.
- This is more of an extreme solution, but it still works. Push out a script on all of the MacBooks which disables sleep entirely.
sudo pmset -a disablesleep 1
Clients get correct IP addresses but not able to pass traffic through default gateway
Apple devices answer ARPs for the gateway