Odd aliasing question

DAve dave.list at pixelhammer.com
Fri Mar 21 07:45:29 PDT 2008

Vince wrote:
> DAve wrote:
>> I've looked but found no examples to give me confidence. While I have 
>> lots of servers running alias IPs the IPs are all on the same network. 
>> I've have been informed by my network admin that we will need to 
>> change the IPs of our legacy name servers (we are just dragging them 
>> along for a time, new name servers are up and domains are being moved 
>> to them).
>> Currently the IP of ns2 is, this needs to change to 
>> The network admin is telling me he will have the router 
>> for that NOC cage handle both IPs no problems. However I need to 
>> continue answering the old IP until clients can get their equipment 
>> reconfigured.
> This will work fine.
>> Can I alias once I change the NIC's IP to 
>> with a default route of
> yes,
>> What netmask would use for the alias line?
> Whatever you currently use for those IPs.

Well whaddaya know. Seems non intuitive to me but I'll give it a shot 
and use 0xffffffff same as any other alias.

>> This seems not possible to me, but you can learn something new 
>> everyday...
> I've been supporting servers for about 10 years and I'm still learning 
> :) Thats why its still fun.

I don't know about fun, interesting for certain ;^)



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