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I am trying to set up multilink ppp on my home Debian Sarge PC to increase the very poor bandwidth from my gprs (GSM cell telephone) Internet connection. I have ppp 2.4.3 with a custom-compiled 2.6.8 kernel with multilink enabled.
To enable multilink I added the option "multilink" to the ppp connection options for both serial interfaces (/dev/ttyUSB0 and /dev/ ttyUSB1). That's all I did. It does not appear to be necessary to set the "endpoint" option.
With the "multilink" option specified, during the "chat" negotiations ppp sends a request to my ISP to set the "endpoint". I can see that my ISP acknowledges and accepts this "endpoint", which makes me believe that my ISP supports multilink. (It is impossible to communicate with the state-owned ISP here in Costa Rica.)
The problem is, however, that when I dial up with my second modem (/dev/ttyUSB1), instead of adding it to ppp0, it initiates a *second* ppp interface (ppp1). Shouldn't the "bundled" interface be ppp0, the
first multilink-enabled ppp connection?
I have pasted the ppp chat dialog for device /dev/ttyUSB0 below. The
dialog when connecting /dev/ttyUSB1 looks similar, except it becomes interface ppp1.