WAN Terminated Issue with Merlin 378.55

[Wilkie]

I just updated the Merlin Rom 378.55 and Reset all of settings on my Asus RT-AC66U, but I encounted the serial issue about the WAN terminated, and the issue already happened several times, the error messages are the following, anybody know why? thanks in advanced.

Nov 13 16:45:36 miniupnpd[656]: PCP MAP: added mapping UDP 5353->192.168.254.6:5353 'PCP MAP 179a11a04d86981fd13daf06'
Nov 13 16:45:36 pppd[386]: No response to 10 echo-requests
Nov 13 16:45:36 pppd[386]: Serial link appears to be disconnected.
Nov 13 16:45:36 pppd[386]: Connect time 352.8 minutes.
Nov 13 16:45:36 pppd[386]: Sent 696746108 bytes, received 886190103 bytes.
Nov 13 16:45:37 miniupnpd[656]: Failed to get IP for interface ppp0
Nov 13 16:45:37 miniupnpd[656]: SendNATPMPPublicAddressChangeNotification: cannot get public IP address, stopping
Nov 13 16:45:37 dnsmasq[278]: read /etc/hosts - 5 addresses
Nov 13 16:45:37 dnsmasq[278]: read /etc/hosts.dnsmasq - 9 addresses
Nov 13 16:45:37 dnsmasq-dhcp[278]: read /etc/ethers - 9 addresses
Nov 13 16:45:37 dnsmasq[278]: using nameserver 202.106.195.68#53 for domain local
Nov 13 16:45:37 dnsmasq[278]: using nameserver 202.106.46.151#53 for domain local
Nov 13 16:45:37 dnsmasq[278]: using nameserver 202.106.46.151#53
Nov 13 16:45:37 dnsmasq[278]: using nameserver 202.106.195.68#53
Nov 13 16:45:41 WAN Connection: Fail to connect with some issues.
Nov 13 16:45:41 stop_nat_rules: apply the redirect_rules!
Nov 13 16:45:43 pppd[386]: Connection terminated.
Nov 13 16:45:43 pppd[386]: Sent PADT
Nov 13 16:45:43 pppd[386]: Modem hangup
Nov 13 16:45:56 miniupnpd[656]: PCP: Invalid PCP v2 MAP message.
Nov 13 16:46:28 pppd[386]: Timeout waiting for PADO packets
Nov 13 16:47:43 pppd[386]: Timeout waiting for PADO packets

 

[Wilkie]

Nobody encounted this?

 

[rromeroa]

I have same problem. With last official firmwares 378.9313 and merlin 378.56_2 problem persists too.
I downgroaded to official 376.3861 and the connection is totally stable.
Have you detected any merlin version that no causes problem?

 

[Wilkie]

I have same problem. With last official firmwares 378.9313 and merlin 378.56_2 problem persists too.
I downgroaded to official 376.3861 and the connection is totally stable.
Have you detected any merlin version that no causes problem?

I tried disabled the QoS and NAT，the issue seem like not happen, but I am not sure. I will keep eyes on this issue.

 

[rromeroa]

I have never had enabled qos

 

[Wilkie]

I have never had enabled qos

How about NAT or VPN or else?

 

[rromeroa]

I'm confused about this issue. Tried merlin 378.56_2 again and wan terminated (no qos, no vpn,....).

Same problem with last asus firmware. I suspect that have added feature or increments any query frecuency that my ISP (movistar) interpreted as malicious and dropping connection.
I'll notify to assus support about this.

This is one log:

Nov 14 12:29:04 pppd[341]: No response to 10 echo-requests
Nov 14 12:29:04 pppd[341]: Serial link appears to be disconnected.
Nov 14 12:29:04 pppd[341]: Connect time 1.6 minutes.
Nov 14 12:29:04 pppd[341]: Sent 38498 bytes, received 3446 bytes.
Nov 14 12:29:04 dnsmasq[275]: read /etc/hosts - 5 addresses
Nov 14 12:29:04 dnsmasq[275]: read /etc/hosts.dnsmasq - 3 addresses
Nov 14 12:29:04 dnsmasq-dhcp[275]: read /etc/ethers - 3 addresses
Nov 14 12:29:04 dnsmasq[275]: using nameserver 80.58.61.250#53
Nov 14 12:29:04 dnsmasq[275]: using nameserver 80.58.61.254#53
Nov 14 12:29:05 WAN Connection: Fail to connect with some issues.
Nov 14 12:29:05 stop_nat_rules: apply the redirect_rules!
Nov 14 12:29:10 pppd[341]: Connection terminated.
Nov 14 12:29:10 pppd[341]: Sent PADT
Nov 14 12:29:10 pppd[341]: Modem hangup
Nov 14 12:29:10 kernel: Interface ppp0 doesn't exist
Nov 14 12:29:55 pppd[341]: Timeout waiting for PADO packets

 

[Puppa]

Your ISP is configured PPPoE, right?

Sent from my SM-N910V using Tapatalk

 

[rromeroa]

Yes, PPPoe.

 

[Wilkie]

It seem the issue was not happened again, I don't why, Maybe it was caused by QoS or NAT, just I guessed

 

[RMerlin]

The PADO timeouts indicate it was most likely an ISP-related issue.

 

[rromeroa]

Thanks everyone. But, why this does not happen with older versions?

 

[RMerlin]

Thanks everyone. But, why this does not happen with older versions?

I was mostly referring to Wilkie since his issue has since disappeared on its own.

In your case, check if your modem loses sync. Try turning it off for 5-10 minutes to fully reset your connect, then try again.

 

[rromeroa]

I was mostly referring to Wilkie since his issue has since disappeared on its own.

In your case, check if your modem loses sync. Try turning it off for 5-10 minutes to fully reset your connect, then try again.

I'm desperate with this issue. It has not worked neither power cycles on/off nor cleaning nvram.
I would install merlin firmware but do not know which version is based on the 376.3861 (only one that works fine to me)

 

[rromeroa]

What this log meaning? I get it every four hours on firmware 376.3861, is not a problem on this version but.... could this be the problem on newer versions? roughly four hours is the time that router remains the connection before "Modem hangup".

pptpd[1837]: CTRL: EOF or bad error reading ctrl packet length.
pptpd[1837]: CTRL: couldn't read packet header (exit)
pptpd[1837]: CTRL: CTRL read failed

thanks

 

[RMerlin]

It means you have enabled the PPTP VPN server, and some random scanners on the Internet are trying to connect to it.

 

[Wilkie]

It means you have enabled the PPTP VPN server, and some random scanners on the Internet are trying to connect to it.

Dear Merlin, can the AC66U use the 380.x firmware in future? thanks.

 

[Wilkie]

It means you have enabled the PPTP VPN server, and some random scanners on the Internet are trying to connect to it.

Hi Merlin, I often experienced an issue about the minidlna whatever the firmware version, my minidlna client can't see full directory list after the AC66U rebooting, if I need to fix this, I only reboot this router again. But I don't know why, and I can see the 3 minidlna processes was actually running when the issue happened. thanks in advanced.

 

[RMerlin]

Dear Merlin, can the AC66U use the 380.x firmware in future? thanks.

Yes.

 

[rromeroa]

It means you have enabled the PPTP VPN server, and some random scanners on the Internet are trying to connect to it.

Finally, installed merlin version 378.52_2, connection is stable for 24 hours.
Its the only one merlin's version that I have suceeded.

Thanks very much