On 11/18/15 13:13, Thomas Bergholz wrote: > kdebug 4 kdebug almost never does what you want, unless you're hacking the kernel modules themselves. Are you sure you need this? > record /tmp/pppd_capture.pcap This looks to me like a bad idea. First of all, the "record" option, besides being quite brutal (it uses a pty pair and passes all data back and forth in and out of the kernel multiple times), does not create pcap format files. It creates async data files in a special format that only pppdump normally reads. It's very hard to use, and is definitely NOT an accurate recording if you're using anything other than PPP on an asynchronous line. Even then, it's appropriate only if you're debugging a problem in AHDLC encoding or flow control or something like that. It's close to worthless for higher level (PPP negotiation or IP data) debugging. And this isn't configured as PPP on an asynchronous line. So, even if you could make it work, it wouldn't give you accurate results for debugging, because it passes the data through an asynchronous pseudo-terminal, and Ethernet is anything but that. I suggest just running wireshark on eth0 instead. Since this is a PPPoE connection, that will capture everything, and wireshark is great at decoding PPPoE (and PPP) negotiation. > unit 0 Not sure why this appears here. > I recongnized that the raspi prints "unrecognized option 'record'", even > though the "record file" option is mentioned in the pppd manpage. > Ubuntu does not print this message. Is this a copy of pppd that you compiled from source or one that you got from someone else? If it's one that you compiled from source, I'd suggest looking at pppd/tty.c to see why that option is missing. If it's one that you got from someone else, then you need to ask them what's been done to it. Some distributors make changes, and it's possible they just removed this (mostly useless) option. I suggest starting over at the top: what problem are you trying to solve? -- James Carlson 42.703N 71.076W <carlsonj@xxxxxxxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-ppp" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
