Broadcast Address for VIP (lo:0)...

Joseph Mack mack.joseph at
Wed Aug 11 14:39:16 BST 2004

Sean Rolinson wrote:
> Hello Group,
> I've setup LVS/DR on RH 3.0 ES.  Everything with regards to LVS is working fine and has been for sometime.  However, we ran in to some problems today deploying a package called Spread (

can you turn on line wrap? Your paragraphs are one line and go off the edge of the screeen.

> Is it ok to not to have a broadcast entry in for lo:0?  Does LVS need to have a broadcast set for it to work properly?

The /32 broadcast for the VIP depends on the kernel version and the forwarding method
and is explained in the HOWTO at least for 2.0 and 2.2 kernels. Why you need a /32
netmask for the VIP under some circumstances is beyond me although Horms appears to
understand it. 

Clearly if your LVS works, then it's OK.


Joseph Mack PhD, High Performance Computing & Scientific Visualization
LMIT, Supporting the EPA Research Triangle Park, NC 919-541-0007
Federal Contact - John B. Smith 919-541-1087 - smith.johnb at

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