Using NFS filesystem on embedded board

I am using NFS to mount filesystem on my embedded board. Filesystem is mounted via eth0 port on my board. But after filesystem is mounted, if i unplug network cable from eth0 and plug into eth1, NFS filesystem does not remount and target hangs until i plug cable into eth0 again. 开发者_Python百科Is it a default NFS behaviour? Or a bug?

Thanks!

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The socket that NFS runs over is bound to the interface, hence it stops working if you yank the cable even if another interface would allow you to connect to the same network. If you want interface failover to work, you need to look into bonding eth0 and eth1. See http://www.kernel.org/doc/Documentation/networking/bonding.txt