From: Bakul Shah <bakul+plan9@bitblocks.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@cse.psu.edu>
Subject: Re: [9fans] simple route question
Date: Wed, 30 May 2007 16:41:12 -0700 [thread overview]
Message-ID: <20070530234112.6F7105B49@mail.bitblocks.com> (raw)
In-Reply-To: Your message of "Wed, 30 May 2007 12:14:23 PDT." <13426df10705301214x141beb74nc8e6c40c8a76d44c@mail.gmail.com>
> > > echo add 12.0.1.1 255.0.0.0 12.0.0.0 > /net/ipifc/1/ctl
> > > echo add 11.0.1.1 255.0.0.0 11.0.0.0 >/etc/ipifc/1/ctl
...
> 12 works fine. Pings to 11 don't make it to the medium code. I'm puzzled.
How well does plan9 do multiple IP addresses on the same
interface?
Could it be that since you added 12.0.1.1/8 *first* by
default the source address will be 12.0.1.1? When you ping
11.x.x.x (presumably node1's ip address), your system sends
an ARP request to map the ip address to a mac address. Now
if the address where ARP response should be sent to is
12.0.1.1, node1 wouldn't know what to do. Can you snoop to
see the arp request? What happens if you add addresses in
the reverse order? Then 12.x.x.x pings should fail.
next prev parent reply other threads:[~2007-05-30 23:41 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-30 16:41 ron minnich
2007-05-30 17:35 ` erik quanstrom
2007-05-30 19:14 ` ron minnich
2007-05-30 23:41 ` Bakul Shah [this message]
2007-05-31 0:22 ` ron minnich
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