Hi 

Need to get your opinion about a general concept about using IP routing over serial/ppp interfaces.

Is it ok to configure an entry in routing table as follows:

Serial1 (1.1.1.1/24) ---------ppp--------------Serial2(2.2.2.2/24) ---IP----3.3.3.3/24 

So at host having serial1:

Route towards 3.3.3.3/24 using next hop as 2.2.2.2

Normally this is not allowed since next hop IP address needs to be in same subnet. However, do you think that subnet 
concept is meaningless in case of serial interface because it is not broadcast medium.

Regards
VG