Empty packet, socket not ready message

A.L.M.Buxey at lboro.ac.uk A.L.M.Buxey at lboro.ac.uk
Fri Jan 15 16:59:57 CET 2016


> We seem to be seeing fragmented UDP packets from roaming{0,1,2}.ja.net
> which match up with EAGAIN coming from the recevfrom syscall.

yep - EAP packets can be big - and therefore expect fragmentation - you 
need to be able to deal with such packets - at all parts of the transit -
not just RADIUS server but also firewall (several have drop fragmented UDP by default)


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