Freeradius multiple account records per login

[Iliya Peregoudov]

It your server has multiple interfaces then there is possibility that 
freeradius receive request through one interface and send response 
through another interface. In such case source address in response will 
differ from destination address in request. NAS will drop such response 
as unsolicited and will continue to resend accounting record. Having 3 
duplicates for each accounting record means that NAS perform 3 send 
attempts for each accounting record.

On multihomed server it is always better to bind UDP socket to actual 
address, not to wildcard address. This ensures that source address in 
response will be equal to destination address in request.

ivaylosp wrote:
> Hi there,
> 
> My RADIUS server hard drive recently crashed and i had to reinstall
> everything from scratch. I got everything working but now every time a user
> logs in i get 3 sessions registered in the accounting table. I remember this
> being a networking issue of some sort but i can not remember or find any
> record of what could cause this behavior. Currently my server IP for binding
> is set to *: 
> 
> listen {
> 	ipaddr = *
> 	port = 1812
> 	type = auth
> }
> listen {
> 	ipaddr = *
> 	port = 1813
> 	type = acct
> }
> 
> Does anyone know the reason for this behavior?
> 
> Regards,
> 
> Ivaylo Petkov
> 
> --
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