Vif0.0: received packet with own address as source address system: Centos5.x kernel: 2.6.18.x command line exception information: vif0.0: stored ed packet with own address as source address. You can also view the system information in dmesg as the machine cannot be connected to the Internet. # view the network configuration $/sbin/ifconfig eth0 Link encap: Ethernet HWaddr FE: FF: FF: FF inet addr: 172.16.1.11 Bcast: 172.16.1.255 Mask: 255.255.255.0 inet6 addr: fe80: 220: aff: fe10: fcff/64 Scopeink up broadcast running multicmtast U: 1500 Tric: 1 RX packets: 136140 errors: 0 dropped: 0 overruns: 0 frame: 0 TX packets: 19734 errors: 0 dropped: 0 overruns: 0 carrier: 0 collisions: 0 txqueuelen: 0 RX bytes: 11102984 (10.5 MiB) TX bytes: 2350144 (2.2 MiB) eth0: 0 Link encap: Ethernet HWaddr FE: FF inet addr: 10.0.0.6 Bcast: 10.0.15.255 Mask: 00000000240.0 up broadcast running multicast mtu: 1500 Metric: 1 lo Link encapocal 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: 188 errors: 0 dropped: 0 overruns: 0 frame: 0 TX packets: 188 errors: 0 dropped: 0 overruns: 0 carrier: 0 collisions: 0 txqueuelen: 0 RX bytes: 15932 (15.5 KiB) TX bytes: 15932 (15.5 KiB) peth0 Link encap: Ethernet HWaddr FE: FF inet6 addr: fe80: fcff: ffff: feff: ffff/64 Scopeink UP BROADCAST RUNNING N Oarp mtu: 1500 Metric: 1 RX packets: 420980 errors: 0 dropped: 0 overruns: 0 frame: 0 TX packets: 32279 errors: 0 dropped: 0 overruns: 0 carrier: 0 collisions: 0 txqueuelen: 1000 RX bytes: 34869961 (33.2 MiB) TX bytes: 3708085 (3.5 MiB) Interrupt: 254 Base address: 0x4000 vif0.0 Link encap: Ethernet HWaddr FE: FF: FF inet6 addr: fe80: fcff: ffff: feff: ffff/64 Scopeink up broadcast running noarp mtu: 1500 Metric: 1 RX packets: 31951 errors: 0 dropped: 0 overruns: 0 frame: 0 TX packets: 408757 errors: 0 dropped: 0 overruns: 0 carrier: 0 collisions: 0 txqueuelen: 0 RX bytes: 3655532 (3.4 MiB) TX bytes: 32287014 (30.7 MiB) Description: The HWaddr address of eth0 and eth0: 6 is the same, which cannot be the same as that of vif0.0, if the same is true, there is a problem. The above results indicate that the problem exists. The HWaddr address is the same and the MAC address is the same, so the error of full screen appears. # Manually specify a MAC address vi/etc/sysconfig/network-scripts/ifcfg-eth0 # restart the NIC service network restart or/etc/init. d/networt restart is only valid for the current session. If you want to set it to permanent, it is best to set the boot start: in/etc/rc. d/rc. add the following three lines to local (you can also add them to/etc/init. d/network add) ifconfig eth0 down ifconfig eth0 hw ether 01: 20: 0A: 10: FD: FF ifconfig eht0 up