<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><HTML DIR=ltr><HEAD><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"></HEAD><BODY>
<DIV id=idOWAReplyText365 dir=ltr>
<DIV dir=ltr><FONT face="Courier New" color=#000000 size=2>A slightly off the
topic question...</FONT></DIV>
<DIV dir=ltr><FONT face="Courier New" size=2></FONT> </DIV>
<DIV dir=ltr><FONT face="Courier New" size=2>Anyone familiar with the
possibility to have a second "hidden"</FONT></DIV>
<DIV dir=ltr><FONT face="Courier New" size=2>IP </FONT><FONT face="Courier New"
size=2>address associated with a physical network interface in</FONT></DIV>
<DIV dir=ltr><FONT face="Courier New" size=2>Solaris style UNICIES. Hidden in
the sence that it does not</FONT></DIV>
<DIV dir=ltr><FONT face="Courier New" size=2>answer ARP questions, in order to
not confuse routers since I</FONT></DIV>
<DIV dir=ltr><FONT face="Courier New" size=2>plan to have several such hidden
interfaces on the same network</FONT></DIV>
<DIV dir=ltr><FONT face="Courier New" size=2>with the same IP
address.</FONT></DIV>
<DIV dir=ltr><FONT face="Courier New" size=2></FONT> </DIV>
<DIV dir=ltr><FONT face="Courier New" size=2>What is my problem?</FONT></DIV>
<DIV dir=ltr><FONT face="Courier New" size=2></FONT> </DIV>
<DIV dir=ltr><FONT face="Courier New" size=2>I want to build a cluster of CPUs
running Erlang. Every CPU has</FONT></DIV>
<DIV dir=ltr><FONT face="Courier New" size=2>at least one own physical network
connection with a "world-wide"</FONT></DIV>
<DIV dir=ltr><FONT face="Courier New" size=2>known IP address. One CPU is leader
and receives UDP packets.</FONT></DIV>
<DIV dir=ltr><FONT face="Courier New" size=2>Other computers in the world knows
the IP address of the leader.</FONT></DIV>
<DIV dir=ltr><FONT face="Courier New" size=2>The leader load balances by
relaying incoming messages using</FONT></DIV>
<DIV dir=ltr><FONT face="Courier New" size=2>distributed Erlang. The CPU "who"
gets the "job" eventually</FONT></DIV>
<DIV dir=ltr><FONT face="Courier New" size=2>replies to the original client. The
reply must look like it came</FONT></DIV>
<DIV dir=ltr><FONT face="Courier New" size=2>from the IP address of the
leader.</FONT></DIV>
<DIV dir=ltr><FONT face="Courier New" size=2></FONT> </DIV>
<DIV dir=ltr><FONT face="Courier New" size=2>I can not hide the cluster behind a
NAT since the individual CPUs</FONT></DIV>
<DIV dir=ltr><FONT face="Courier New" size=2>must be accessible too, by their
own IP addresses.</FONT></DIV>
<DIV dir=ltr><FONT face="Courier New" size=2></FONT> </DIV>
<DIV dir=ltr><FONT face="Courier New" size=2>/Lennart</FONT></DIV>
<DIV dir=ltr><FONT face="Courier New" size=2></FONT> </DIV>
<DIV dir=ltr><FONT face="Courier New" color=#000000
size=2></FONT> </DIV></DIV>
<DIV id=idSignature13456 dir=ltr>
<DIV><FONT face="Courier New" color=#000000
size=2>-------------------------------------------------------------</FONT></DIV>
<DIV><FONT face="Courier New" color=#000000 size=2>Lennart
Ohman
phone : +46-8-587 623 27</FONT></DIV>
<DIV><FONT face="Courier New" size=2>Sjöland & Thyselius Telecom
AB cellular: +46-70-552 6735</FONT></DIV>
<DIV><FONT face="Courier New" size=2>Sehlstedtsgatan
6
fax : +46-8-667 8230</FONT></DIV>
<DIV><FONT face="Courier New" size=2>SE-115 28 STOCKHOLM,
SWEDEN email : <A
href="mailto:lennart.ohman@st.se">lennart.ohman@st.se</A></FONT></DIV></DIV></BODY></HTML>