yes I test the same cable to my own pc and internet works.
also if unplug on openwrt does't show IP if I plug it show IP assigned
root@OpenWrt:~# ifconfig
br-lan Link encap:Ethernet HWaddr 54:AF:97:89:0D:26
inet addr:192.168.10.1 Bcast:192.168.10.255 Mask:255.255.255.0
inet6 addr: fe80::56af:97ff:fe89:d26/64 Scope:Link
inet6 addr: fd70:13bf:2451::1/60 Scope:Global
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:4939 errors:0 dropped:0 overruns:0 frame:0
TX packets:2387 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:675082 (659.2 KiB) TX bytes:784684 (766.2 KiB)
eth0 Link encap:Ethernet HWaddr 54:AF:97:89:0D:26
inet addr:192.168.1.105 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::56af:97ff:fe89:d26/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:779 errors:0 dropped:0 overruns:0 frame:0
TX packets:186 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:127051 (124.0 KiB) TX bytes:15378 (15.0 KiB)
Interrupt:5
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:728 errors:0 dropped:0 overruns:0 frame:0
TX packets:728 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:57808 (56.4 KiB) TX bytes:57808 (56.4 KiB)
wlan0 Link encap:Ethernet HWaddr 54:AF:97:89:0D:26
inet6 addr: fe80::56af:97ff:fe89:d26/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:4951 errors:0 dropped:0 overruns:0 frame:0
TX packets:2681 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:745668 (728.1 KiB) TX bytes:989693 (966.4 KiB)