[olug] CentOS?

[Rob Townley]

On Thu, Aug 19, 2010 at 8:42 AM, Luke-Jr <luke at dashjr.org> wrote:
> On Wednesday, August 18, 2010 06:27:07 pm Barry Von Ahsen wrote:
>> also make sure the device name changes (assuming they have separate
>> ifcfg-ethX files)
>>
>> DEVICE=eth0
>> DEVICE=eth0:1
>> etc.
>
> FWIW, the whole virtual network device paradigm is considered legacy/obsolete.
> The "correct" way to do this now is just assigning multiple addresses to a
> single eth0 device using the 'ip addr' command. However, a side effect of this
> is that deprecated legacy tools like ifconfig (which use old APIs) will only
> show the first address assigned, etc. Not sure if this is related to the
> problem or not, but might be worth noting.
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Daniel, i had another boy Tuesday --- 3 kids in 26 months.  My wife
about killed me when she saw me checking email.

Did this get resolved?  Interesting that the MAC address for
78.46.78.247 does not match at all the arp -a output from the guest.
ip link and ip neighbor can be more helpful.

According to the following, you need a dedicated router virtual
machine that acts as the gateway for virtual machines.  Does this
sound like the same "hetzner"?  hetzner statically maps IP addresses
to MAC addresses.  So when the IP /MAC pair is not in their routers,
the packets drop.

Further:
  *ESXi is an operating system designed for virtualization. Its
networking features do not include NAT or routing.
  *The addon IP addresses can only be used in bridge mode, which
requires additional MACs to be assigned. For using a subnet, one of
the addon IP addresse has to be setup as a router.

http://wiki.hetzner.de/index.php?title=VMware_ESXi_english&action=edit

== Network Setup ==

*In the data -centers IP addresses are statically mapped to the MAC
address of the server. Thus it is necessary to request special MACs
for the addtional  IP addresses through a  support request because
only bridge mode is possible. These have to configured for a given
virtual server and its IP. To get these MACs assigned, log in to
Hetzner Robot  "Request -> Server-Request / technical product
adivce". The FlexiPack is pre-requisite.