Hi, Alan, Arran, have you ever seen FreeRADIUS run out of file descriptors? One of our pilot sites reported this this evening: Tue Mar 24 02:15:02 2015 : Info: ... adding new socket auth from client (127.0.0.1, 44084) -> (*, 2083, virtual-server=abfab-idp) Tue Mar 24 02:15:02 2015 : Error: Failed opening proxy socket 'proxy (0.0.0.0, 0) -> home_server (212.219.179.131, 2083)' : Failed in connect(): No route to host Tue Mar 24 02:15:02 2015 : Error: Failed to insert request into the proxy list Tue Mar 24 02:15:07 2015 : Info: ... shutting down socket auth from client (127.0.0.1, 44084) -> (*, 2083, virtual-server=abfab-idp) Tue Mar 24 02:20:01 2015 : Info: ... adding new socket auth from client (127.0.0.1, 44086) -> (*, 2083, virtual-server=abfab-idp) Tue Mar 24 02:20:02 2015 : Error: Failed opening proxy socket 'proxy (0.0.0.0, 0) -> home_server (212.219.179.131, 2083)' : Failed finding socket, caller must allocate a new one Tue Mar 24 02:20:02 2015 : Error: Failed to insert request into the proxy list Tue Mar 24 02:20:07 2015 : Error: FATAL failure opening /dev/null: Too many open files I know it's just a short snippet, but is this at all helpful? This was a standard Moonshot IdP with a 'ping' every 5 minutes for around what... 2 weeks (since we resolved that socket proxy loss)... Anything you want me to try other than suggesting to my pilot site to run valgrind? Thanks very much :-) Stefan Paetow Moonshot Industry & Research Liaison Coordinator t: +44 (0)1235 822 125 gpg: 0x3FCE5142 xmpp: stefanp@jabber.dev.ja.net skype: stefan.paetow.janet Lumen House, Library Avenue, Harwell Oxford, Didcot, OX11 0SG jisc.ac.uk Jisc is a registered charity (number 1149740) and a company limited by guarantee which is registered in England under Company No. 5747339, VAT No. GB 197 0632 86. Jisc’s registered office is: One Castlepark, Tower Hill, Bristol, BS2 0JA. T 0203 697 5800. Jisc Collections and Janet Ltd. is a wholly owned Jisc subsidiary and a company limited by guarantee which is registered in England under Company No. number 2881024, VAT No. GB 197 0632 86. The registered office is: Lumen House, Library Avenue, Harwell, Didcot, Oxfordshire, OX11 0SG. T 01235 822200.