1.移动大内网，宽带速率1000M。拓扑是：光猫桥接——8820S（主路由，刷padavan，版本3.4.3.9-099-20201015，用于拨号）。主路由分线直连3个房间。一个房间是水星x18G（提供wifi），另两个房间直连网心云盒子（挂流量）。
2.设置如下图。还是经常性断网，昨天21点左右开始掉网，重启光猫和路由器后暂有效。
3.请问下大神，到底是什么原因导致的，是否需要更换光猫？还是改设置？还是换固件？请帮忙提供下建议，谢谢！
4.记录
May 18 13:15:23 kernel: mtk_esw: Link Status Changed - Port WAN Link Down
May 18 13:15:24 detect_link: WAN port link down detected! May 18 13:15:26 kernel: mtk_esw: Link Status Changed - Port WAN Link Up May 18 13:15:28 detect_link: WAN port link restored! May 18 22:14:52 pppd[516]: No response to 6 echo-requests May 18 22:14:52 pppd[516]: Serial link appears to be disconnected. May 18 22:14:52 pppd[516]: Connect time 3736.7 minutes. May 18 22:14:52 pppd[516]: Sent 3709005828 bytes, received 2765694619 bytes. May 18 22:14:52 ZTE_E8820S: WAN down (ppp0) May 18 22:14:52 dnsmasq[2925]: read /etc/hosts - 4 addresses May 18 22:14:52 dnsmasq[2925]: read /etc/storage/dnsmasq/hosts - 0 addresses May 18 22:14:52 dnsmasq-dhcp[2925]: read /etc/dnsmasq/dhcp/dhcp-hosts.rc May 18 22:14:52 dnsmasq-dhcp[2925]: read /etc/storage/dnsmasq/dhcp.conf May 18 22:14:52 dnsmasq[2925]: using nameserver 192.168.1.1#53 May 18 22:14:52 PPPoE: Disconnected May 18 22:14:58 pppd[516]: Connection terminated. May 18 22:14:58 pppd[516]: Sent PADT May 18 22:14:58 pppd[516]: Modem hangup May 18 22:15:06 ZTE_E8820S: Perform WAN manual reconnect May 18 22:15:06 pppd[516]: Terminating on signal 15 May 18 22:15:06 pppd[516]: Exit. May 18 22:15:06 DHCP MAN Client: deconfig (eth3): lease is lost May 18 22:15:06 ZTE_E8820S: MAN down (eth3) May 18 22:15:07 kernel: eth3: ===> VirtualIF_close May 18 22:15:07 kernel: eth3: ===> VirtualIF_open May 18 22:15:07 ZTE_E8820S: Hardware NAT/Routing: Enabled, IPoE/PPPoE offload [WAN]<->[LAN/WLAN] May 18 22:15:07 ZTE_E8820S: Hardware NAT/Routing: IPv4 UDP flow offload - ON May 18 22:15:07 ZTE_E8820S: Hardware NAT/Routing: IPv6 routes offload - OFF May 18 22:15:07 DHCP MAN Client: starting on eth3 ... May 18 22:15:07 pppd[3618]: Plugin rp-pppoe.so loaded. May 18 22:15:07 pppd[3618]: RP-PPPoE plugin version 3.12 compiled against pppd 2.4.7 May 18 22:15:07 pppd[3619]: pppd 2.4.7 started by admin, uid 0 May 18 22:15:20 ZTE_E8820S: Perform WAN manual disconnect May 18 22:15:21 pppd[3619]: Unable to complete PPPoE Discovery May 18 22:15:21 pppd[3619]: Terminating on signal 15 May 18 22:15:21 pppd[3619]: Exit. May 18 22:15:28 ZTE_E8820S: Perform WAN manual reconnect May 18 22:15:28 kernel: eth3: ===> VirtualIF_close May 18 22:15:28 ZTE_E8820S: Hardware NAT/Routing: Enabled, IPoE/PPPoE offload [WAN]<->[LAN/WLAN] May 18 22:15:28 kernel: eth3: ===> VirtualIF_open May 18 22:15:28 ZTE_E8820S: Hardware NAT/Routing: IPv4 UDP flow offload - ON May 18 22:15:28 ZTE_E8820S: Hardware NAT/Routing: IPv6 routes offload - OFF May 18 22:15:28 DHCP MAN Client: starting on eth3 ... May 18 22:15:28 pppd[3730]: Plugin rp-pppoe.so loaded. May 18 22:15:28 pppd[3730]: RP-PPPoE plugin version 3.12 compiled against pppd 2.4.7 May 18 22:15:28 pppd[3731]: pppd 2.4.7 started by admin, uid 0 May 18 22:16:04 pppd[3731]: Timeout waiting for PADO packets May 18 22:17:19 pppd[3731]: Timeout waiting for PADO packets May 18 22:18:34 pppd[3731]: Timeout waiting for PADO packets May 18 22:19:49 pppd[3731]: Timeout waiting for PADO packets May 18 22:21:04 pppd[3731]: Timeout waiting for PADO packets May 18 22:21:23 kernel: mtk_esw: Link Status Changed - Port WAN Link Down May 18 22:21:24 detect_link: WAN port link down detected! May 18 22:21:55 kernel: mtk_esw: Link Status Changed - Port WAN Link Up May 18 22:21:56 detect_link: WAN port link restored! May 18 22:21:58 kernel: mtk_esw: Link Status Changed - Port WAN Link Down May 18 22:21:58 detect_link: WAN port link down detected! May 18 22:22:02 kernel: mtk_esw: Link Status Changed - Port WAN Link Up May 18 22:22:02 detect_link: WAN port link restored! May 18 22:22:08 DHCP MAN Client: bound (eth3), IP: 192.168.1.2, GW: 192.168.1.1, lease time: 604800 May 18 22:22:08 ZTE_E8820S: MAN up (eth3) May 18 22:22:08 dnsmasq[2925]: read /etc/hosts - 4 addresses May 18 22:22:08 dnsmasq[2925]: read /etc/storage/dnsmasq/hosts - 0 addresses May 18 22:22:08 dnsmasq-dhcp[2925]: read /etc/dnsmasq/dhcp/dhcp-hosts.rc May 18 22:22:08 dnsmasq-dhcp[2925]: read /etc/storage/dnsmasq/dhcp.conf May 18 22:22:08 dnsmasq[2925]: using nameserver 192.168.1.1#53 May 18 22:22:19 pppd[3731]: Timeout waiting for PADO packets May 18 22:22:19 pppd[3731]: PPP session is 6969 (0x1b39) May 18 22:22:19 pppd[3731]: Connected to 0c:a4:02:b1:19:7d via interface eth3 May 18 22:22:19 pppd[3731]: Using interface ppp0 May 18 22:22:19 pppd[3731]: Connect: ppp0 <--> eth3 May 18 22:22:22 pppd[3731]: Remote message: Login ok May 18 22:22:22 pppd[3731]: PAP authentication succeeded May 18 22:22:22 pppd[3731]: peer from calling number 0C:A4:02:B1:19:7D authorized May 18 22:22:22 pppd[3731]: local IP address 10.165.214.175 May 18 22:22:22 pppd[3731]: remote IP address 10.165.192.1 May 18 22:22:22 pppd[3731]: primary DNS address 211.140.13.188 May 18 22:22:22 pppd[3731]: secondary DNS address 211.140.188.188 May 18 22:22:22 ZTE_E8820S: WAN up (ppp0) May 18 22:22:22 dnsmasq[2925]: read /etc/hosts - 4 addresses May 18 22:22:22 dnsmasq[2925]: read /etc/storage/dnsmasq/hosts - 0 addresses May 18 22:22:22 dnsmasq-dhcp[2925]: read /etc/dnsmasq/dhcp/dhcp-hosts.rc May 18 22:22:22 dnsmasq-dhcp[2925]: read /etc/storage/dnsmasq/dhcp.conf May 18 22:22:22 dnsmasq[2925]: using nameserver 211.140.13.188#53 May 18 22:22:22 dnsmasq[2925]: using nameserver 211.140.188.188#53 May 18 22:22:22 PPPoE: Connected | 
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