dnat to multiple destination

[=?unknown-8bit?b?sLAg/uP+4yDf6nL74vFnILCw?= <duppeh@yahoo.com>]

hi there,

recently i read iptables man page,
in the DNAT part :
You  can  add  several --to-destination options.  If
you specify more than
one destination address, either via an address range
or multiple --to-des­
tination  options,  a simple round-robin (one after
another in cycle) load
balancing takes place between these adresses.

in my mind, it sounds like:
iptables -A PREROUTING -s xxx.xxx.xxx.xxx -p tcp
--dport 80 -j DNAT --to-destination aaa.aaa.aaa.aaa
--to-destination bbb.bbb.bbb.bbb

but it says invalid arguments.
which part was wrong ?

cheers,
Agung


		
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