内网问题，其他机器上网都正常，就是这台机器，上网5秒就断线，关闭网络连接，开启网络连接正常5秒断线。TP-LINK路由器系统日志记载如下： （该机器内网IP：192.168.1.113）
100 0280:DHCPS: request(): cid=1:0x0014784a4161; ip=192.168.1.113; send_dhcp(ACK) done.
101 0294:DHCPS: request(): cid=1:0x0014784a4161; ip=192.168.1.113; send_dhcp(ACK) done.
102 0437:DHCPS: request(): cid=1:0x0014784a4161; ip=192.168.1.113; send_dhcp(ACK) done.
103 0646:DHCPS: request(): cid=1:0x0014784a4161; ip=192.168.1.113; send_dhcp(ACK) done.
104 1300:DHCPS: request(): cid=1:0x0014784a4161; ip=192.168.1.113; send_dhcp(ACK) done.
105 1679:DHCPS: request(): cid=1:0x0014784a4161; ip=192.168.1.113; send_dhcp(ACK) done.
106 1712:DHCPS: request(): cid=1:0x0014784a4161; ip=192.168.1.113; send_dhcp(ACK) done.
107 1813:DHCPS: request(): cid=1:0x0014784a4161; ip=192.168.1.113; send_dhcp(ACK) done.
108 1933:DHCPS: request(): cid=1:0x001731724efa; ip=192.168.1.8; send_dhcp(ACK) done.
109 3009:DHCPS: request(): cid=1:0x0014784a4161; ip=192.168.1.113; send_dhcp(ACK) done.
110 3013:DHCPS: request(): cid=1:0x0014784a4161; ip=192.168.1.113; send_dhcp(ACK) done.
111 3041:DHCPS: request(): cid=1:0x0014784a4161; ip=192.168.1.113; send_dhcp(ACK) done.
112 3190:DHCPS: request(): cid=1:0x0014784a4161; ip=192.168.1.113; send_dhcp(ACK) done.
113 3235:DHCPS: request(): cid=1:0x0014784a4161; ip=192.168.1.113; send_dhcp(ACK) done.
114 3238:DHCPS: request(): cid=1:0x0014784a4161; ip=192.168.1.113; send_dhcp(ACK) done.
115 3253:DHCPS: request(): cid=1:0x0014784a4161; ip=192.168.1.113; send_dhcp(ACK) done.
116 3275:DHCPS: request(): cid=1:0x0014784a4161; ip=192.168.1.113; send_dhcp(ACK) done.
117 3278:DHCPS: request(): cid=1:0x0014784a4161; ip=192.168.1.113; send_dhcp(ACK) done.
118 3475:DHCPS: request(): cid=1:0x0015003c99dd; ip=192.168.1.6; send_dhcp(ACK) done.
119 3476:DHCPS: decline(): cid=1:0x0015003c99dd; done.
120 3486:DHCPS: request(): cid=1:0x0015003c99dd; ip=192.168.1.9; send_dhcp(ACK) done.
121 3935:DHCPS: request(): cid=1:0x0014784a4161; ip=192.168.1.113; send_dhcp(ACK) done.
122 3939:DHCPS: request(): cid=1:0x0014784a4161; ip=192.168.1.113; send_dhcp(ACK) done.
123 3969:DHCPS: request(): cid=1:0x0014784a4161; ip=192.168.1.113; send_dhcp(ACK) done.
124 4055:DHCPS: request(): cid=1:0x0014784a4161; ip=192.168.1.113; send_dhcp(ACK) done.
125 4140:DHCPS: request(): cid=1:0x0014784a4161; ip=192.168.1.113; send_dhcp(ACK) done.
126 4161:DHCPS: request(): cid=1:0x0014784a4161; ip=192.168.1.113; send_dhcp(ACK) done.
127 4181:DHCPS: request(): cid=1:0x0014784a4161; ip=192.168.1.113; send_dhcp(ACK) done.
128 4210:DHCPS: request(): cid=1:0x0014784a4161; ip=192.168.1.113; send_dhcp(ACK) done.
129 4213:DHCPS: request(): cid=1:0x0014784a4161; ip=192.168.1.113; send_dhcp(ACK) done.
130 4221:DHCPS: request(): cid=1:0x0014784a4161; ip=192.168.1.113; send_dhcp(ACK) done.
131 4335:DHCPS: request(): cid=1:0x0014784a4161; ip=192.168.1.113; send_dhcp(ACK) done.
132 4423:DHCPS: request(): cid=1:0x0014784a4161; ip=192.168.1.113; send_dhcp(ACK) done.
133 4446:DHCPS: request(): cid=1:0x0014784a4161; ip=192.168.1.113; send_dhcp(ACK) done.
134 4578:DHCPS: request(): cid=1:0x0013cecabe8c; ip=192.168.1.11; send_dhcp(ACK) done.
135 4740:DHCPS: request(): cid=1:0x0014784a4161; ip=192.168.1.113; send_dhcp(ACK) done.
136 4910:DHCPS: request(): cid=1:0x0014784a4161; ip=192.168.1.113; send_dhcp(ACK) done.
Time = 2007-07-10 9:49:58 5138s
H-Ver = WR541G/542G v2 00000000 : S-Ver = 2.10.0 Build 060119 Rel.32618n
L = 192.168.1.1 : M = 255.255.255.0
Mode = PPPoE : W = 58.252.42.65 : M = 255.0.0.0 : G = 58.252.42.65
Free=5436, Busy=667, Bind=220, Inv=0/20, Bc=0/5, Dns=19, cl=95, fc=0/0, sq=0/0
是什么问题，请指教！谢谢！
