iproute kai dyo dynamic ppp grames

[I.Ioannou]

Gia dwste ligi boithia giati exw xathei sto howto tou 
lartc kai den bgazw akri. Exw :

intranet->linux-->ppp0->provider1
               +->ppp1->provider2
	       
	       
Thelw na kanw masquarade to intranet kai na mirasw
tis mises tou IP na pernane apo to ppp0 kai tis alles
mises apo to ppp1. Kai ta dyo ppp einai dynamic.

1) Sikwnw ta devices ws sinithws alla xwris default getaway
2) me kapoio tropo mathenw tis dynamic ip tous
3) Kanw split access me ip route add klp 
    (edw ena paradeigma twn entolwn tha htane eyprosdekto)
    Prepei prwta na sbysw ta route tables pou exei fiaxei to ppp
    h den epireazei ?
4) ti trexw gia na orisw oti specific source IPs pernane apo specific ppp device ?
5) Se poio shmeio trexw thn antistoixh (ipchains/iptable/h ti allo)
   entoli gia na doulepsei to masquarade ?
   
An den to kanw opws poio panw, alla sto bima 4 kanw load balancing me 
ip route add default scope global nexthop via klp klp, ti apantisi exei to bhma 5 ?


TIA 
roryt