Flint GL-AX1800 - PPPoE keeps dropping connection

I replaced my ISP router with the Flint GL-AX1800 yesterday. I updated to the latest firmware version. It worked quite good for the first afternoon.

Now I woke up this morning and my internet PPPoE connection keeps dropping every now and then. Is there something wrong on my side or on the side of the ISP? Note that I never had any problems in the past few months with the ISP router.

Logfile (masked part of the IP addresses for privacy):

Sun Dec 19 11:34:42 2021 daemon.info pppd[32052]: No response to 5 echo-requests
Sun Dec 19 11:34:42 2021 daemon.notice pppd[32052]: Serial link appears to be disconnected.
Sun Dec 19 11:34:42 2021 daemon.info pppd[32052]: Connect time 75.3 minutes.
Sun Dec 19 11:34:42 2021 daemon.info pppd[32052]: Sent 112707768 bytes, received 164735656 bytes.
Sun Dec 19 11:34:42 2021 daemon.notice netifd: Network device ‘pppoe-wan’ link is down
Sun Dec 19 11:34:42 2021 daemon.info pppd[32052]: Terminating on signal 15
Sun Dec 19 11:34:47 2021 daemon.notice netifd: Interface ‘wan’ is now down
Sun Dec 19 11:34:47 2021 daemon.notice netifd: Interface ‘wan’ is disabled
Sun Dec 19 11:34:47 2021 kern.info kernel: [13271.067875] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
Sun Dec 19 11:34:47 2021 daemon.notice netifd: Interface ‘wan’ is enabled
Sun Dec 19 11:34:47 2021 daemon.notice netifd: Interface ‘wan’ is setting up now
Sun Dec 19 11:34:47 2021 daemon.notice netifd: Network device ‘eth0’ link is down
Sun Dec 19 11:34:47 2021 daemon.warn dnsmasq[20003]: no servers found in /tmp/resolv.conf.auto, will retry
Sun Dec 19 11:34:47 2021 daemon.notice netifd: Interface ‘wan’ has link connectivity loss
Sun Dec 19 11:34:47 2021 daemon.notice netifd: Network device ‘eth0’ link is up
Sun Dec 19 11:34:47 2021 daemon.notice netifd: Interface ‘wan’ has link connectivity
Sun Dec 19 11:34:47 2021 daemon.notice netifd: Interface ‘wan’ is setting up now
Sun Dec 19 11:34:47 2021 kern.info kernel: [13271.110948] eth0: PHY Link up speed: 1000
Sun Dec 19 11:34:47 2021 daemon.notice netifd: Interface ‘wan’ is now down
Sun Dec 19 11:34:47 2021 daemon.notice netifd: Interface ‘wan’ is disabled
Sun Dec 19 11:34:47 2021 kern.info kernel: [13271.144970] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
Sun Dec 19 11:34:47 2021 daemon.notice netifd: Interface ‘wan’ is enabled
Sun Dec 19 11:34:47 2021 daemon.notice netifd: Interface ‘wan’ is setting up now
Sun Dec 19 11:34:47 2021 daemon.notice netifd: Network device ‘eth0’ link is down
Sun Dec 19 11:34:47 2021 daemon.notice netifd: Interface ‘wan’ has link connectivity loss
Sun Dec 19 11:34:48 2021 daemon.notice netifd: Network device ‘eth0’ link is up
Sun Dec 19 11:34:48 2021 daemon.notice netifd: Interface ‘wan’ has link connectivity
Sun Dec 19 11:34:48 2021 daemon.notice netifd: Interface ‘wan’ is setting up now
Sun Dec 19 11:34:48 2021 kern.info kernel: [13272.110454] eth0: PHY Link up speed: 1000
Sun Dec 19 11:34:48 2021 daemon.info pppd[17022]: Plugin rp-pppoe.so loaded.
Sun Dec 19 11:34:48 2021 daemon.info pppd[17022]: RP-PPPoE plugin version 3.8p compiled against pppd 2.4.7
Sun Dec 19 11:34:48 2021 daemon.notice pppd[17022]: pppd 2.4.7 started by root, uid 0
Sun Dec 19 11:35:03 2021 daemon.warn pppd[17022]: Timeout waiting for PADO packets
Sun Dec 19 11:35:03 2021 daemon.err pppd[17022]: Unable to complete PPPoE Discovery
Sun Dec 19 11:35:03 2021 daemon.info pppd[17022]: Exit.
Sun Dec 19 11:35:03 2021 daemon.notice netifd: Interface ‘wan’ is now down
Sun Dec 19 11:35:03 2021 daemon.notice netifd: Interface ‘wan’ is disabled
Sun Dec 19 11:35:03 2021 kern.info kernel: [13287.368325] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
Sun Dec 19 11:35:03 2021 daemon.notice netifd: Interface ‘wan’ is enabled
Sun Dec 19 11:35:03 2021 daemon.notice netifd: Interface ‘wan’ is setting up now
Sun Dec 19 11:35:03 2021 daemon.notice netifd: Network device ‘eth0’ link is down
Sun Dec 19 11:35:03 2021 daemon.notice netifd: Interface ‘wan’ has link connectivity loss
Sun Dec 19 11:35:04 2021 daemon.notice netifd: Network device ‘eth0’ link is up
Sun Dec 19 11:35:04 2021 daemon.notice netifd: Interface ‘wan’ has link connectivity
Sun Dec 19 11:35:04 2021 daemon.notice netifd: Interface ‘wan’ is setting up now
Sun Dec 19 11:35:04 2021 kern.info kernel: [13288.110671] eth0: PHY Link up speed: 1000
Sun Dec 19 11:35:04 2021 daemon.info pppd[18408]: Plugin rp-pppoe.so loaded.
Sun Dec 19 11:35:04 2021 daemon.info pppd[18408]: RP-PPPoE plugin version 3.8p compiled against pppd 2.4.7
Sun Dec 19 11:35:04 2021 daemon.notice pppd[18408]: pppd 2.4.7 started by root, uid 0
Sun Dec 19 11:35:04 2021 daemon.info pppd[18408]: PPP session is 5736
Sun Dec 19 11:35:04 2021 daemon.warn pppd[18408]: Connected to b4:8a:5f:–:–:-- via interface eth0
Sun Dec 19 11:35:04 2021 kern.info kernel: [13288.268164] pppoe-wan: renamed from ppp0
Sun Dec 19 11:35:04 2021 daemon.info pppd[18408]: Using interface pppoe-wan
Sun Dec 19 11:35:04 2021 daemon.notice pppd[18408]: Connect: pppoe-wan <–> eth0
Sun Dec 19 11:35:04 2021 daemon.notice pppd[18408]: PAP authentication succeeded
Sun Dec 19 11:35:04 2021 daemon.notice pppd[18408]: peer from calling number B4:8A:5F:–:–:-- authorized
Sun Dec 19 11:35:05 2021 daemon.notice pppd[18408]: local IP address 58.186.—.–
Sun Dec 19 11:35:05 2021 daemon.notice pppd[18408]: remote IP address 118.69.—.–
Sun Dec 19 11:35:05 2021 daemon.notice pppd[18408]: primary DNS address 210.245.–.—
Sun Dec 19 11:35:05 2021 daemon.notice pppd[18408]: secondary DNS address 210.245.–.—
Sun Dec 19 11:35:05 2021 daemon.notice netifd: Network device ‘pppoe-wan’ link is up
Sun Dec 19 11:35:05 2021 daemon.notice netifd: Interface ‘wan’ is now up
Sun Dec 19 11:35:05 2021 daemon.info dnsmasq[20003]: reading /tmp/resolv.conf.auto
Sun Dec 19 11:35:05 2021 daemon.info dnsmasq[20003]: using local addresses only for domain test
Sun Dec 19 11:35:05 2021 daemon.info dnsmasq[20003]: using local addresses only for domain onion
Sun Dec 19 11:35:05 2021 daemon.info dnsmasq[20003]: using local addresses only for domain localhost
Sun Dec 19 11:35:05 2021 daemon.info dnsmasq[20003]: using local addresses only for domain local
Sun Dec 19 11:35:05 2021 daemon.info dnsmasq[20003]: using local addresses only for domain invalid
Sun Dec 19 11:35:05 2021 daemon.info dnsmasq[20003]: using local addresses only for domain bind
Sun Dec 19 11:35:05 2021 daemon.info dnsmasq[20003]: using local addresses only for domain lan
Sun Dec 19 11:35:05 2021 daemon.info dnsmasq[20003]: using nameserver 210.245.–.—#53
Sun Dec 19 11:35:05 2021 daemon.info dnsmasq[20003]: using nameserver 210.245.–.—#53
Sun Dec 19 11:35:06 2021 user.info mwan3rtmon[3346]: Detect rtchange event.
Sun Dec 19 11:35:06 2021 user.notice firewall: Reloading firewall due to ifup of wan (pppoe-wan)

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Something similar error with what I have last few days. But no one able to help out. I think it is related to vlan tagging issue.

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Hi haste.
Do you use vlan?
please check following command output for analysis:

ifconfig eth0
swconfig dev switch0 show | grep port

Do you use mac clone?

Thanks for the response. No I’m not using vlan or mac clone.
But after rebooting the ISP internet device connected to my WAN port the problem ‘solved’ itself.
It might had to do with the migration from old router to new one and needed a proper reset.

Haven’t had any issues last 2 days.

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