How does carp computes the MAC address of the a certain Virtual IP?

[Mark Jayson Alvarez]

Hi,
     How does carp computes the MAC address of the a certain Virtual IP? Perhaps I can set up a route for the virtual IP address manually because the kernel keeps on complaining: "arp_trequest: bad gateway (!AF_LINK). This is weired because my carp setup is working for the past 4 days and it suddenly stopped with the above error.
 
 Any idea?
 Thanks
 
		
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