rt-n10+ d1與 p874相容性問題

原本之前是買rt-n10 後來故障換給一台rt-n10+ b1 如今又故障(不過電)又換給一台新的rt-10+ d1,可是昨天試了一晚 wan老是斷線,必須點選機器上的恢復才能連一下,換上盒子給的rj45線 還是繼續斷,請問這是相容性問題嗎?
同台p874上有接一台傻多分享器很正常,之前用rt-n10+ b1也是正常
想起幾年前買台訊舟分享器接adsl也是一直無法連上線(升級韌體也是)後來換其他牌子的就好了
中華電信的機器跟分享器真有相容性問題嗎?
又送修一次皇家同樣換了一台新的 也同樣的問題?

附上分享器記錄檔
Jan 1 00:00:16 RT-N10+ syslog.info syslogd started: BusyBox v1.7.2
Jan 1 00:00:17 RT-N10+ user.notice igmp[1804]: igmp started!
Jan 1 08:00:18 RT-N10+ user.emerg dhcp client: deconfig: lease is lost
Jan 1 00:00:20 RT-N10+ user.emerg WAN Connection: WAN was exceptionally disconnected.
Jan 1 00:00:20 RT-N10+ user.emerg wanduck: Enable QIS rule
Jan 1 00:00:20 RT-N10+ user.emerg wanduck: Short udp_timeout
Jan 1 00:00:23 RT-N10+ user.notice igmp[1804]: setsockopt- MRT_ADD_VIF
Jan 1 00:00:23 RT-N10+ user.notice igmp[1804]: interface 192.168.1.90, DOWNSTREAM ver=0x16 name=br0 index=7
Jan 1 00:00:23 RT-N10+ user.notice igmp[1804]: interface 0.0.0.0, UPSTREAM ver=0x16 name=eth0 index=3
Jan 1 00:00:27 RT-N10+ daemon.info pppd[1848]: Plugin rp-pppoe.so loaded.
Jan 1 00:00:27 RT-N10+ daemon.info pppd[1848]: RP-PPPoE plugin version 3.3 compiled against pppd 2.4.2
Jan 1 00:00:27 RT-N10+ user.emerg wanduck: Enable QIS rule(SIGUSR2)
Jan 1 00:00:27 RT-N10+ user.emerg wanduck: Short udp_timeout
Jan 1 00:00:27 RT-N10+ daemon.notice pppd[1849]: pppd 2.4.2 started by admin, uid 0
Jan 1 00:00:28 RT-N10+ daemon.debug pppd[1849]: PADS: Service-Name: ''
Jan 1 00:00:28 RT-N10+ daemon.info pppd[1849]: PPP session is 13673
Jan 1 00:00:28 RT-N10+ daemon.debug pppd[1849]: using channel 1
Jan 1 00:00:28 RT-N10+ daemon.info pppd[1849]: Using interface ppp0