ядро std-pae 2.6.25-alt9 pppd из сизифа ppp-2.4.4-alt10.2.1 соединение проходит нормально, живет до тех пор пока не начинается интенсивный обмен трафикомOct 4 04:10:21 localhost pptpd[4501]: CTRL: Client 10.155.240.153 control connection started Oct 4 04:10:22 localhost pptpd[4501]: CTRL: Starting call (launching pppd, opening GRE) Oct 4 04:10:22 localhost pppd[4502]: Plugin radius.so loaded. Oct 4 04:10:22 localhost pppd[4502]: RADIUS plugin initialized. Oct 4 04:10:22 localhost pppd[4502]: pppd 2.4.4 started by root, uid 0 Oct 4 04:10:22 localhost pppd[4502]: Using interface ppp0 Oct 4 04:10:22 localhost pppd[4502]: Connect: ppp0 <--> /dev/pts/1 Oct 4 04:10:25 localhost pppd[4502]: local IP address 192.168.0.1 Oct 4 04:10:25 localhost pppd[4502]: remote IP address 89.20.141.15 Oct 4 04:10:25 localhost pppd[4502]: Script /etc/ppp/ip-up finished (pid 4506), status = 0x0 Oct 4 04:11:00 localhost pptpd[4501]: GRE: xmit failed from decaps_hdlc: No buffer space available Oct 4 04:11:00 localhost pptpd[4501]: CTRL: PTY read or GRE write failed (pty,gre)=(6,7) Oct 4 04:11:00 localhost pppd[4502]: Modem hangup Oct 4 04:11:00 localhost pppd[4502]: Connect time 0.6 minutes. Oct 4 04:11:00 localhost pppd[4502]: Sent 13172588 bytes, received 261287 bytes. Oct 4 04:11:00 localhost pppd[4502]: Connection terminated. Oct 4 04:11:00 localhost pppd[4502]: Script /etc/ppp/ip-down finished (pid 4532), status = 0x1 Oct 4 04:11:00 localhost pppd[4502]: Exit. Oct 4 04:11:00 localhost pptpd[4501]: CTRL: Client 10.155.240.153 control connection finished
а там случайно conntrack нигде не используется?
в целом бага не бага, скорее фича mtu mru 1400 от нее избавляет. единственное что может быть подумать принудительно мту давать ниже... вобщем не критично
iptables --clamp-mss-to-pmtu