Hi I have FreeRadius configured to allocate v4 from sqlippool but to send a pool name to the router for v6 allocation. Occasionally, I see v4 allocation failures. Obviously I am getting to the bottom of this but in the meantime if I see a v4 allocation fail, I want to immediately send an auth-fail. At the moment, if the v4 fails, the process continues and I send the v6 pool name. The result is that the client authenticates, gets a v6 address but no v4 address. Can someone point me in the right direction of how to modify the logic to do this please? Thanks David David Lake Visiting Professor 5G Innovation Centre (5GIC and 6GIC) Tel: +44 (0)7711 736784 Email: d.lake@surrey.ac.uk<mailto:%20d.lake@surrey.ac.uk> Web: surrey.ac.uk<http://www.surrey.ac.uk/?utm_medium=internal&utm_source=emailsignature&utm_campaign=reputation+50th+brand> [A blue text on a black background Description automatically generated]<http://www.surrey.ac.uk/?utm_source=emailsignature&utm_medium=internal&utm_campaign=emailsignature_1819&utm_content=emailsignature_homepage> James Clerk Maxwell Building, University of Surrey, Guildford, Surrey, GU2 7XH, UK