Pripojeni pres ppp a nastaveni gateway

Ahoj, Mam ARM desku s debianem a snazim se pripojit pres ppp a gprs modem na internet (vodafone). Vlastni pripojeni probehne celkem bez problemu:

Aug 20 15:16:25 localhost pppd[1615]: Serial connection established.
Aug 20 15:16:25 localhost pppd[1615]: Using interface ppp0
Aug 20 15:16:25 localhost pppd[1615]: Connect: ppp0 <--> /dev/ttyS4
Aug 20 15:16:28 localhost pppd[1615]: local  IP address 10.28.12.215
Aug 20 15:16:28 localhost pppd[1615]: remote IP address 10.28.12.215
Aug 20 15:16:28 localhost pppd[1615]: primary   DNS address 217.77.165.81
Aug 20 15:16:28 localhost pppd[1615]: secondary DNS address 217.77.161.131

Jen je zajmave ze local a remote IP sou stejny.

Problem je ze se mi nenastavi defaultni gateway.

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.0.0     *               255.255.255.0   U     0      0        0 eth0
default         *               0.0.0.0         U     0      0        0 ppp0

Aby to zacalo fungovat musim pridat defaultni gateway:

route add default gw 10.28.12.215

v konfiguracnim souboru pripojeni ale mam zapnuty defaultroute, takze moc nechapu proc se neprida. Samozrejme bych mohl napsat jednoduchy script co podle pridelene adresy nastavi i gateway, ale radeji bych aby to fungovalo samo (nebo aspon vedel proc to nefunguje).

Konfigurace ppp:

user "myusername@realm"

connect "/usr/sbin/chat -v -f /etc/chatscripts/pap -T *99***1#"

# Serial device to which the modem is connected.
/dev/ttyS4

# Assumes that your IP address is allocated dynamically by the ISP.
noipdefault
# Try to get the name server addresses from the ISP.
usepeerdns
replacedefaultroute
# Use this connection as the default route.
defaultroute
usepeerdns

# Makes pppd "dial again" when the connection is lost.
persist
lock

# Do not ask the remote to authenticate.
noauth

Dotaz: Pripojeni pres ppp a nastaveni gateway