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(From the default distribution, only reject_relay delay needs to be changed.)
FreeRADIUS is capable of both IPv4 and IPv6. By default, both are enabled in the listen {} section of sites-enabled/default so we'll duplicate them in our new sites-enabled/eduroam configuration. (The listen {} directives used to be in /etc/raddb/radiusd.conf for FreeRADIUS 2.) You can leave out the IPv6 part if your server shouldn't do IPv6.
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