Re: PPPoE MTU Problem
On 2007/06/09 01:49, Will Jenkins wrote: Also I can't work out how to get any kind of logs from kernel pppoe. # ifconfig pppoe0 debug then to turn it off (to avoid spamming /var/log/messages with each outgoing packet): # ifconfig pppoe0 -debug Sometimes running tcpdump on the ethernet interface that pppoe runs over can be informative too, e.g. tcpdump -niiface -vvs1500
Re: PPPoE MTU Problem
On 2007/06/08 23:44, Jason McIntyre wrote: On Fri, Jun 08, 2007 at 04:36:28PM +0100, Will Jenkins wrote: I've been experiencing some strange problems. I have a PPPoE/PPPoA bridging ethernet modem in the UK and am using userland ppp to connect to my DSL provider. I have been setting MTU/MRU to 1458 in ppp.conf and have been getting a *lot* of these messages: ppp[18688]: tun0: Error: ip_Input: deflink: wrote 1429, got Message too long no answers for you, but here are some stuff i would mess with: - kernel pppoe(4) (much nicer ;) seconded, it works nicely on BT-based lines in .uk for me (some of the LLU providers only do PPPoA though). I found it a lot easier to get working than using ppp(8), and I'm not exactly new to ppp(8)...
Re: PPPoE MTU Problem
On Fri, Jun 08, 2007 at 04:36:28PM +0100, Will Jenkins wrote: I've been experiencing some strange problems. I have a PPPoE/PPPoA bridging ethernet modem in the UK and am using userland ppp to connect to my DSL provider. I have been setting MTU/MRU to 1458 in ppp.conf and have been getting a *lot* of these messages: ppp[18688]: tun0: Error: ip_Input: deflink: wrote 1429, got Message too long no answers for you, but here are some stuff i would mess with: - kernel pppoe(4) (much nicer ;) - disable mssfixup in ppp.conf (if it's already on) - pf's max-mss option - use ifconfig to mess w/ sis mtu (i think sis can be adjusted) jmc
Re: PPPoE MTU Problem
On 9 Jun 2007, at 00:11, Stuart Henderson wrote: On 2007/06/08 23:44, Jason McIntyre wrote: On Fri, Jun 08, 2007 at 04:36:28PM +0100, Will Jenkins wrote: I've been experiencing some strange problems. I have a PPPoE/PPPoA bridging ethernet modem in the UK and am using userland ppp to connect to my DSL provider. I have been setting MTU/MRU to 1458 in ppp.conf and have been getting a *lot* of these messages: ppp[18688]: tun0: Error: ip_Input: deflink: wrote 1429, got Message too long no answers for you, but here are some stuff i would mess with: - kernel pppoe(4) (much nicer ;) seconded, it works nicely on BT-based lines in .uk for me (some of the LLU providers only do PPPoA though). I found it a lot easier to get working than using ppp(8), and I'm not exactly new to ppp(8)... I actually started with kernel pppoe and it worked great for two hours and then died inexplicably. The connection then refused to come up after repeated reboots which I found very strange. I went back to my Netgear for a few days and then tried OBSD again. This time the connection held for 5 days and died. Again repeated reboots wouldn't coax the connection back to life but my Netgear router worked fine. I thought I'd try userland ppp because my intuition leads me to believe it may be able to handle odd connection drops etc more robustly. Also I can't work out how to get any kind of logs from kernel pppoe. Will
Re: PPPoE MTU Problem
Will , PPPoE needs a MTU of 1492 , i had the same problem with other values Give it a try. Marcos - Original Message - From: Will Jenkins [EMAIL PROTECTED] To: misc@openbsd.org Sent: Friday, June 08, 2007 9:49 PM Subject: Re: PPPoE MTU Problem On 9 Jun 2007, at 00:11, Stuart Henderson wrote: On 2007/06/08 23:44, Jason McIntyre wrote: On Fri, Jun 08, 2007 at 04:36:28PM +0100, Will Jenkins wrote: I've been experiencing some strange problems. I have a PPPoE/PPPoA bridging ethernet modem in the UK and am using userland ppp to connect to my DSL provider. I have been setting MTU/MRU to 1458 in ppp.conf and have been getting a *lot* of these messages: ppp[18688]: tun0: Error: ip_Input: deflink: wrote 1429, got Message too long no answers for you, but here are some stuff i would mess with: - kernel pppoe(4) (much nicer ;) seconded, it works nicely on BT-based lines in .uk for me (some of the LLU providers only do PPPoA though). I found it a lot easier to get working than using ppp(8), and I'm not exactly new to ppp(8)... I actually started with kernel pppoe and it worked great for two hours and then died inexplicably. The connection then refused to come up after repeated reboots which I found very strange. I went back to my Netgear for a few days and then tried OBSD again. This time the connection held for 5 days and died. Again repeated reboots wouldn't coax the connection back to life but my Netgear router worked fine. I thought I'd try userland ppp because my intuition leads me to believe it may be able to handle odd connection drops etc more robustly. Also I can't work out how to get any kind of logs from kernel pppoe. Will
