Ubuntu network configuration problems?

Ubuntu network configuration problems? -- Linux general technology-Linux technology and application information. For details, refer to the following section. My laptop Nic is boradcom netlink gigabit ew.net and intel pro/wireless 3945.
The following shows the ifconfig command for ubuntu 8.04:

CODE: eth0 Link encap: Ethernet HWaddr 00: 16: d3: e4: 0b: a3 Inet addr: 222.206.118.234 Bcast: 222.206.118.255 Mask: 255.255.255.0 Up broadcast multicast mtu: 1500 Metric: 1 RX packets: 0 errors: 0 dropped: 0 overruns: 0 frame: 0 TX packets: 0 errors: 0 dropped: 0 overruns: 0 carrier: 0 Collisions: 0 FIG: 1000 RX bytes: 0 (0.0 B) TX bytes: 0 (0.0 B) Interrupt: 17 Eth0: avahi Link encap: Ethernet HWaddr 00: 16: d3: e4: 0b: a3 Inet addr: 169.254.7.196 Bcast: 169.254.255.255 Mask: 255.255.255.0.0 Up broadcast multicast mtu: 1500 Metric: 1 Interrupt: 17 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: 16436 Metric: 1 RX packets: 1504 errors: 0 dropped: 0 overruns: 0 frame: 0 TX packets: 1504 errors: 0 dropped: 0 overruns: 0 carrier: 0 Collisions: 0 txqueuelen: 0 RX bytes: 75200 (73.4 KB) TX bytes: 75200 (73.4 KB) Wlan0 Link encap: Ethernet HWaddr 00: 1b: 77: 5a: c4: 12 Up broadcast multicast mtu: 1500 Metric: 1 RX packets: 0 errors: 0 dropped: 0 overruns: 0 frame: 0 TX packets: 0 errors: 0 dropped: 0 overruns: 0 carrier: 0 Collisions: 0 FIG: 1000 RX bytes: 0 (0.0 B) TX bytes: 0 (0.0 B) Wmaster0 Link encap: UNSPEC HWaddr 00-1b-77-5a-c4-12-00-00-00-00-00-00-00-00-00-00-00-00 Up broadcast running multicast mtu: 1500 Metric: 1 RX packets: 0 errors: 0 dropped: 0 overruns: 0 frame: 0 TX packets: 0 errors: 0 dropped: 0 overruns: 0 carrier: 0 Collisions: 0 FIG: 1000 RX bytes: 0 (0.0 B) TX bytes: 0 (0.0 B)