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Ow wait, now I understand, your IP's are on the same server but are not in a range.
<br />Then there will probably be no other way then to use the max subnet (and that could indeed be a 255.255.255.0) that will cover the needed ip's.
<br />
<br />Can't you ask for a range of IP's? After all they (provider) are complaining about something that is not caused by your own fault.
<br />
<br />Wisja
<br />
<br /><font size="2"><b>On Wed, 13 Nov 2013 11:25:27 +0000, Menno Jansz wrote</b>
<br />>
Hi Wirja,
<br />>
<br />>
I cant do that because my 4 alias ips are not in a range, they are all
<br />>
very different.
<br />>
<br />>
Cheers,
<br />>
Menno
<br />>
<br />>
On Wed, 13 Nov 2013 12:05:49 +0100, "Wisja.net Computers"
<info@wisja.net>
<br />>
wrote:
<br />>
> Depending on how many IP's you have you could change the .0 to
<br />>
> whatever meets your needs.
<br />>
> For example, use 255.255.255.240 when you have 16 (14 real usable) IP's.
<br />>
<br />>
> There are several online subnet calculators, just type 'subnet
<br />>
calculator'
<br />>
> in any search engine to get more info about subnets.
<br />>
>
<br />>
> Wisja
<br />>
>
<br />>
> ON WED, 13 NOV 2013 10:44:06 +0000, MENNO JANSZ WROTE
<br />>
>> Hi,
<br />>
>>
<br />>
>> I'm having a problem trying to set my interface alias netmask to
<br />>
>> 255.255.255.255.
<br />>
>>
<br />>
>> The GUI complains saying "Sorry, 255.255.255.255 is not a valid
<br />>
netmask.
<br />>
>> Please enter a series of four numbers between 0 and 255 separated by
<br />>
>> periods. For example, 255.255.255.0 is a valid entry."
<br />>
>>
<br />>
>> My hosting provider has instructed me that my Interface Alias ips, what
<br />>
<br />>
>> they call failover ips, are misconfigured because the netmask is
<br />>
>> 255.255.255.0 and that this is causing unnecessary arp who-has requests
<br />>
> on
<br />>
>> the network. And they are threatening to block my ip if I dont sort it
<br />>
in
<br />>
>
<br />>
>> the next 24 hours!
<br />>
>>
<br />>
>> They have instructed me to set the aliases as follows:
<br />>
>>
<br />>
>> DEVICE="eth0:0"
<br />>
>> ONBOOT="yes"
<br />>
>> BOOTPROTO="none"
<br />>
>> IPADDR="IP.FAIL.OVER"
<br />>
>> NETMASK="255.255.255.255"
<br />>
>> BROADCAST="IP.FAIL.OVER"
<br />>
>>
<br />>
>> Any ideas how I comply with their request? If I just manually edit the
<br />>
>> etc/sysconfig/network-scripts/ifcfg-eth0:x scripts I assume the GUI
<br />>
>> sausalito scripts will just overwrite them again?
<br />>
>>
<br />>
>> Cheers,
<br />>
>> Menno
<br />>
>>
<br />>
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