Hello to the list... The problem: a long time running stable v3.4 OBSD VPN gateway running behind a (german) SDSL line was replaced with a gateway version 3.7 (stable).
Now I got ppp mtu problems and can't see why. Most config-files were just copied from v3.4, the ppp.conf file didn't change: ############################################# default: set log all -sync -physical -tcp/ip -DNS set redial 10 0 set reconnect 10 2000000000 set timeout 0 set device "!/usr/sbin/pppoe -vvvv -i xl0" set speed sync disable acfcomp protocomp ipv6cp deny acfcomp set ifaddr 10.0.0.1/0 10.0.0.2/0 enable mssfixup accept lqr connect: set authname "kjfvkjfdkjdfgkj" set authkey "jfhkfhfjhfvjkhfk" set mtu max 1416 set mru max 1416 add! default HISADDR ############################################## pppoe (v3.7) is still userland. Don't ask why mtu is 1416 - all traffic is sent through an l2tp tunnel too, so it's a "must". ;-) Both sides are running OBSD VPN gateways (ipsec/ISAKMPD). Remote gateway is always a v3.4 version. With v3.7 I got ppp log messages: tun0: Error: ip_Input: deflink: wrote 1452, got Message too long.... Nothing on the LAN-side changed. I looked in the archives and googled around - some similar questions, few answers, and all doesn't hit the problem. Changelog didn't help too. Or I am way too stupid.... Funny: when I reduce the mtu on the client machines (XP/2000) to 1416, the error messages disappear, but tcp-traffic doesn't work yet. I had to re-replace v3.7 with v3.4 again :-(( Any suggestions or hints? greetings Andre Ruppert
