今天发现了个很奇怪的问题

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我这是南昌电信，今天突然发现路由器没网了，重连后路由器日志显示成功， 这里是日志， Tue Nov 7 20:44:10 2017 daemon.warn pppd[12275]: [pppoe hook debug] syscall operations name probe pandorabox ok! Tue Nov 7 20:44:10 2017 daemon.warn pppd[12275]: [pppoe hook debug] hook status=1 Tue Nov 7 20:44:10 2017 daemon.notice pppd[12275]: pppd 2.4.7 started by root, uid 0 Tue Nov 7 20:44:10 2017 daemon.info detect_internet[11364]: Network changed.Start a detect now... Tue Nov 7 20:44:15 2017 daemon.info pppd[12275]: PPP session is 47697 Tue Nov 7 20:44:15 2017 daemon.warn pppd[12275]: Connected to cc:1a:fa:e9:6c:40 via interface eth0.2 Tue Nov 7 20:44:15 2017 daemon.info pppd[12275]: Using interface pppoe-netkeeper Tue Nov 7 20:44:15 2017 daemon.notice pppd[12275]: Connect: pppoe-netkeeper <--> eth0.2 Tue Nov 7 20:44:15 2017 daemon.info pppd[12275]: syncppp not active Tue Nov 7 20:44:15 2017 daemon.info pppd[12275]: CHAP authentication succeeded: Authentication Successful,Welcome! Tue Nov 7 20:44:15 2017 daemon.notice pppd[12275]: CHAP authentication succeeded Tue Nov 7 20:44:15 2017 daemon.notice pppd[12275]: peer from calling number CC:1A:FA:E9:6C:40 authorized Tue Nov 7 20:44:16 2017 daemon.notice pppd[12275]: local IP address 59.52.122.106 Tue Nov 7 20:44:16 2017 daemon.notice pppd[12275]: remote IP address 59.52.120.1 Tue Nov 7 20:44:16 2017 daemon.notice pppd[12275]: primary DNS address 202.101.224.69 Tue Nov 7 20:44:16 2017 daemon.notice pppd[12275]: secondary DNS address 202.101.226.69 Tue Nov 7 20:44:16 2017 daemon.notice netifd: Network device 'pppoe-netkeeper' link is up Tue Nov 7 20:44:16 2017 daemon.notice netifd: Interface 'netkeeper' is now up Tue Nov 7 20:44:16 2017 daemon.info dnsmasq[4036]: reading /tmp/resolv.conf.auto Tue Nov 7 20:44:16 2017 daemon.info dnsmasq[4036]: using nameserver 114.114.114.114#53 for domain valf.atm.youku.com Tue Nov 7 20:44:16 2017 daemon.info dnsmasq[4036]: using local addresses only for domain lan Tue Nov 7 20:44:16 2017 daemon.info dnsmasq[4036]: using nameserver 114.114.114.114#53 for domain apple.com Tue Nov 7 20:44:16 2017 daemon.info dnsmasq[4036]: using nameserver 202.101.224.69#53 Tue Nov 7 20:44:16 2017 daemon.info dnsmasq[4036]: using nameserver 202.101.226.69#53 Tue Nov 7 20:44:16 2017 daemon.notice netifd: Network alias 'pppoe-netkeeper' link is up

接口那也显示了电信分配的ip，但是就是没有网，我把路由器换成padavan后第一次拨号成功，但之后也是类似的问题，日志里显示成功，但是实际无法上网， 使用同样路由器的之前拨号成功的并没有掉线 而且没网时显示分配的ip都是同59.52.122.* 不知道是怎么回事，哪位大佬知道怎么回事么