network problem with eth0 on linux
I have a laptop, the wifi is OK, but for wired network, if I'm using windows, it is OK. But with linux, yesterday, it is OK, but today I can't access the network through eth0(in windows, it is OK), what are potential problems?
BTW, yesterday I modified MTU from 1406 to 500, but then modified it back to 1406.
eth0 Link encap:Ethernet HWaddr 5C:26:0A:2B:B8:06
inet addr:220.127.116.11 Bcast:18.104.22.168 Mask:255.255.240.0
inet6 addr: fe80::5e26:aff:fe2b:b806/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1406 Metric:1
RX packets:21221 errors:0 dropped:0 overruns:0 frame:0
TX packets:1355 errors:0 dropped:0 overruns:0 carrier:0
RX bytes:3710568 (3.5 MiB) TX bytes:130299 (127.2 KiB)
additional information: 1 it seems it is from dhcp coz I didn't do any configuration for the ip address, and it is a public IP. but the ip is fixed
2 I think the /etc/resolv.conf is fine, coz previously the network is fine