How to setup pppd to work with unix-socket instead of a serial?

just-a-guest · 06-20-2014, 03:20 AM

Is there a way to setup the pppd in order to accept and send a ppp messages into a unix-socket(it is pretty like a named pipes)? I.e. not a real serial port.

just-a-guest · 06-20-2014, 06:01 AM

I am found that the local option is seems to allow ignoring a pins(at least a few), so I should use it for an unix sockets.
But it seems that I misunderstanding a few the job of a pppd -- my mind was too tied to my localized problem. As I saw, it is initially was created for a dialup connections. So, if I bind a pppd to a serial, all the packets that has come there will be unwrapped from PPP/IP/..., and redirected to some port with my application. As I understand this could be only done by creating a new network interface by the pppd. But if I issue

Code:

pppd local -detach /dev/ttyS4

no new interface shown in ifconfig output. More over, after some time the pppd just exits with an error, like this

Code:

$ pppd local -detach /dev/ttyS4
Using interface ppp0
Connect: ppp0 <--> /dev/ttyS4
LCP: timeout sending Config-Requests
Connection terminated.
Modem hangup

just-a-guest · 06-20-2014, 06:13 AM

Of course every network interface should have own IP address. My eth0 have 10.5.57.197. So, it would be better if I get an error like this.

Code:

$ pppd local -detach 10.5.57.198: /dev/ttyS4
Using interface ppp0
Connect: ppp0 <--> /dev/ttyS4
LCP: timeout sending Config-Requests
Connection terminated.
Modem hangup