br-lan: received packet on eth0.1 with own address as source address错误PandoraBox报错
Tue Jan 3 20:11:06 2017 kern.warn kernel: [ 5827.040000] br-lan: received packet on eth0.1 with own address as source address
Tue Jan 3 20:14:43 2017 kern.warn kernel: [ 6044.004000] br-lan: received packet on eth0.1 with own address as source address
Tue Jan 3 20:15:17 2017 kern.warn kernel: [ 6077.920000] br-lan: received packet on eth0.1 with own address as source address
Tue Jan 3 20:17:23 2017 kern.warn kernel: [ 6203.360000] br-lan: received packet on eth0.1 with own address as source address
Tue Jan 3 20:17:41 2017 kern.warn kernel: [ 6222.004000] br-lan: received packet on eth0.1 with own address as source address
Tue Jan 3 20:23:39 2017 kern.warn kernel: [ 6579.680000] br-lan: received packet on eth0.1 with own address as source address
Tue Jan 3 20:26:21 2017 kern.warn kernel: [ 6742.004000] br-lan: received packet on eth0.1 with own address as source address
Tue Jan 3 20:27:01 2017 kern.warn kernel: [ 6782.004000] br-lan: received packet on eth0.1 with own address as source address
如果路由器日志里面大量提示这个错误，这是因为MAC重复导致的错误
原来这个告警的address也就是地址的意思，也就是MAC address
路由器是OpenWRT系统的，接上网络后，一直出现这句告警，
但是不影响连通性。
首先看到这个是内核打印的，查了其他人的解释，
1. brctl stp intf on
2. 关闭ipv6
都试过了，无效！
进入了一个误区，因为是br-lan一直打印这个，导致认为lan配置有问题。
偶然把wan口连接断开，告警消失了？
这才想到，我的路由器lan wan实际上同一个eth物理网卡，只是虚拟出来的vlan，MAC地址也就是相同的。为了方便，我把lan wan都通过同一个交换机接到PC，wan口寻找自己的gateway和DNS，向外狂发广播包，到了交换机，包就又回到了路由器的lan口。这样收到的报文srcmac和br-lan口自己mac相同了，故而有这个告警！！！！！
原来这个告警的address是MAC address。
愚蠢的错误
查看内核源码，这个告警只在bridge模块(net/bridge/br_fdb.c)才会检查，不在lan上创建bridge则没有问题。
把lan/wan的hwaddr用ifconfig修改成不一样的，就可以彻底解决。
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