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Bug 17745 - Wrong outgoing IP address with IP aliases
Wrong outgoing IP address with IP aliases
Product: Red Hat Linux
Classification: Retired
Component: kernel (Show other bugs)
i386 Linux
medium Severity medium
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Assigned To: Michael K. Johnson
Depends On:
  Show dependency treegraph
Reported: 2000-09-20 11:22 EDT by Need Real Name
Modified: 2008-05-01 11:37 EDT (History)
0 users

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Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2001-01-29 19:24:01 EST
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RHEL 7.3 requirements from Atomic Host:
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Description Need Real Name 2000-09-20 11:22:45 EDT
I have set up my machine with one IP alias interface (eth0:0). The to
adresses are assigned
correctly. But if I establish an outgoing connection the originating
address is not the primary
IP assigned to eth0, but the alias IP assigned to eth0:0. If I run "ifdown
eth0" and afterwards
"ifup eth0" everything works fine and the right IP address is used for
outgoing connections.
Comment 1 Bill Nottingham 2001-01-29 19:23:57 EST
That is done by the kernel; it's not an initscripts problem.
Comment 2 Michael K. Johnson 2001-01-30 18:00:52 EST
David Miller reports:
The selection of source address for outgoing packets
through primary or aliased interfaces is basically

Those who absolutely require a specific source address
need to use the "ip" program to tell the kernel the
preferred source address for outgoing routes through
those interfaces.

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