ppp uses the following attributes from the RADIUS reply:
RAD_FRAMED_IP_ADDRESS
The peer IP address is set to the given value.
RAD_FRAMED_IP_NETMASK
The tun interface netmask is set to the given value.
RAD_FRAMED_MTU
If the given MTU is less than the peers MRU as agreed
during LCP negotiation, *and* it is less that any config-
ured MTU (see the ``set mru'' command), the tun interface
MTU is set to the given value.
RAD_FRAMED_COMPRESSION
If the received compression type is ``1'', ppp will
request VJ compression during IPCP negotiations despite
any ``disable vj'' configuration command.
RAD_FRAMED_ROUTE
The received string is expected to be in the format
dest[/bits] gw [metrics]. Any specified metrics are
ignored. MYADDR and HISADDR are understood as valid val-
ues for dest and gw, ``default'' can be used for dest to
sepcify the default route, and ``0.0.0.0'' is understood
to be the same as ``default'' for dest and HISADDR for
gw.
For example, a returned value of ``1.2.3.4/24 0.0.0.0 1 2
-1 3 400'' would result in a routing table entry to the
1.2.3.0/24 network via HISADDR and a returned value of
``0.0.0.0 0.0.0.0'' or ``default HISADDR'' would result
in a default route to HISADDR.
All RADIUS routes are applied after any sticky routes are
applied, making RADIUS routes override configured routes.
This also applies for RADIUS routes that don't include
the MYADDR or HISADDR keywords.
не мало ли атрибутов ppp использует?