Xen ホストで "received packet with own address as source address" エラーを受け取る理由

Issue

RHEL5 Xen ホストで、/var/log/messages に複数のエントリーが表示されます。ここでは、自身のアドレスがソースアドレスになる物理ネットワークインターフェイスで受け取ったパケットに関するエラーを表示しています。

Feb 20 04:09:07 xenhost01 kernel: printk:24 messages suppressed.  
Feb 20 04:09:07 xenhost01 kernel: pbond1: received packet with own address as source address  
Feb 20 04:09:12 xenhost01 kernel: printk:24 messages suppressed.  
Feb 20 04:09:12 xenhost01 kernel: pbond1: received packet with own address as source address  
Feb 20 04:09:17 xenhost01 kernel: printk:24 messages suppressed.  
Feb 20 04:09:17 xenhost01 kernel: pbond1: received packet with own address as source address  
Feb 20 04:09:22 xenhost01 kernel: printk:24 messages suppressed.  
Feb 20 4:09:22 xenhost01 kernel: pbond1: received packet with own address as source address