Hi! I have a router running openwrt connected to a GPON ONT, running a PPPoE connection (hw details below). The problem is, that after some random time one to 20 hours, the connection breaks. Then in about a minute it reconnects (successfully, each time). This happens almost every day. I enabled the debug option, but there is nothing useful in the logs: ** there is nothing related before this line ** Tue Apr 21 10:04:32 2020 daemon.notice pppd[6515]: Modem hangup Tue Apr 21 10:04:32 2020 daemon.info pppd[6515]: Connect time 1094.4 minutes. Tue Apr 21 10:04:32 2020 daemon.info pppd[6515]: Sent 612360704 bytes, received 3423392867 bytes. Tue Apr 21 10:04:32 2020 daemon.notice netifd: Network device 'pppoe-wan' link is down Tue Apr 21 10:04:32 2020 daemon.debug pppd[6515]: Script /lib/netifd/ppp-down started (pid 7655) Tue Apr 21 10:04:32 2020 daemon.notice pppd[6515]: Connection terminated. Tue Apr 21 10:04:32 2020 daemon.debug pppd[6515]: Send PPPOE Discovery V1T1 PADT session 0x1 length 28 Tue Apr 21 10:04:32 2020 daemon.debug pppd[6515]: dst a4:xx:xx:xx:xx:44 src c4:xx:xx:xx:xx:ed Tue Apr 21 10:04:32 2020 daemon.debug pppd[6515]: [host-uniq 00 00 19 73] [AC-cookie ed 89 xx xx xx xx xx xx xx xx xx xx xx xx xx 75] Tue Apr 21 10:04:32 2020 daemon.info pppd[6515]: Sent PADT Tue Apr 21 10:04:32 2020 daemon.debug pppd[6515]: Waiting for 1 child processes... Tue Apr 21 10:04:32 2020 daemon.debug pppd[6515]: script /lib/netifd/ppp-down, pid 7655 Tue Apr 21 10:04:32 2020 daemon.debug pppd[6515]: Script /lib/netifd/ppp-down finished (pid 7655), status = 0x1 Tue Apr 21 10:04:32 2020 daemon.info pppd[6515]: Exit. The command line is: /usr/sbin/pppd nodetach ipparam wan ifname pppoe-wan lcp-echo-interval 1 lcp-echo-failure 5 lcp-echo-adaptive +ipv6 set AUTOIPV6=1 nodefaultroute usepeerdns maxfail 1 user XXXXXX password YYYYYY ip-up-script /lib/netifd/ppp-up ipv6-up-script /lib/netifd/ppp6-up ip-down-script /lib/netifd/ppp-down ipv6-down-script /lib/netifd/ppp-down mtu 1492 mru 1492 plugin rp-pppoe.so nic-eth1.3902 (the PPPoE goes over VLAN 3902, pppd version is 2.4.7) I wrote about this on the openwrt forum [1], not much progress unfortunately. Any ides? How to proceed? Sniff packets? What does normally prompt pppd to to print "Modem hangup" ? Thanks in advance, David [1] https://forum.openwrt.org/t/pppoe-disconnects-every-few-hours/61239 Setup details: ONT: Innbox G21 (provided by ISP) router: Netgear WNDR 3700v2 running OpenWRT 19.7.2 ISP provided router (not in use): Ubee TVW625 - I did not see such disconnections when using this router (I ran a script calling ping in a loop, for days, logging output, not problem except a lost (single) packet every now and then)
