pppd incomatible with libradcli4

["Eugene M. Zheganin" <emz@norma.perm.ru>]

Hello,

I'm trying to set up the VPN stack using xl2tpd/strongswan on recent 
Debian 9.5, and so far everything is working except radius 
authentication (I have a freeradius3 setup which is fully working, so I 
need to use it to authenticate users). Seems like pppd is totally 
incompatible with libradcli4: when I add

plugin radius.so
plugin radattr.so

into  the /etc/ppp/options.xl2tpd configuration file, pppd starts 
complaining about missing directives:

first, /etc/radiusclient/radiusclient.conf cannot be read. Okay, I don't 
know if it's right, but since radiusclient1 seems to be vanished 
completely, I can link /etc/radcli as /etc/radiusclient.

Then the following happens:


/etc/radiusclient/radiusclient.conf: mapfile not specified

 /etc/radiusclient/radiusclient.conf: seqfile not specified


These two can be easily (again, not sure if it' s the right way to fix 
it) by specifying the old seqfile/mapfile directives, but then I'm stuck at


rc_read_dictionary: invalid type on line 34 of dictionary 
/etc/radcli/dictionary


Seems like pppd and libradcli4 have totally different ideas about radius 
dictionnaries. How do you guys handle it ?


Thanks.

Eugene.