Logging hotspot username

RouterOS General
1

Hi,
I use this configuration to log sessions to a remote syslog server:

/system logging
add action=remote topics=firewall

/system logging action
set 3 remote=10.0.0.1

I obtained this:

 srcnat: in:(none) out:wan, src-mac 1c:87:2c:b4:4d:e2, proto TCP (SYN), 10.0.0.253:51247->64.4.54.99:443, len 60,1,10.20.0.221,5,20160509122220,20160509122220,1,device@hotspot.ap,1c:87:2c:b4:4d:e2,TCP,10.0.0.253,51247,64.4.54.99,443

I’d like to log authenticated username on the same line, too.
Is it possible?


I don’t use local Mikrotik users, but external user database, through Radius server.
Thank you very much!

2

Sorry, I missed some info.
I mark traffic directed to Internet with this rule:

/ip firewall mangle
add action=mark-packet chain=prerouting dst-address=!10.0.0.0/24 \
    in-interface=hotspot new-packet-mark=pisanu passthrough=no protocol=tcp \
    tcp-flags=syn

After this, I log only packets with mark:

/ip firewall nat

add action=log chain=pre-hotspot log-prefix=device packet-mark=pisanu