Hi, I'm using freeradius 3.17 with unifi APs[1] to provide authentication and accounting. I'm currently using 3 APs. I've run into a problem: radwho will only ever display one user per AP at max. I've run radiusd -X and also looked into the source code that handles radutmp. It seems that the NAS-Port value needs to be unique per user. The APs, however, always supply a NAS-Port of 0. I've looked a bit into the hostapd that unifi is using, and it seems it is a (heavily) patched version, so no chance to get a standard hostapd running. I've tested with standard hostapd: This does use a unique NAS-Port value when sending accounting packets to the radius server, so all concurrently logged in users per AP are shown correctly by radwho. My question is: Is there any way to get radwho/radutmp accounting to work correctly even with the NAS-Port always set to 0? Thanks, HC [1] https://www.ubnt.com/unifi/unifi-ap/