[Xorp-hackers] gre tunnel problem
Pavlin Radoslavov
pavlin at ICSI.Berkeley.EDU
Thu Feb 21 14:37:52 PST 2008
Pavlin Radoslavov <pavlin at ICSI.Berkeley.EDU> wrote:
> > I still have problem.
> > Thus gre interface have 2 addresses one is public ip and
> > another is tunnel ip, when enable igmp or pim on gre
> > interface, sometimes it register the public ip causing erro
> > "Address already in use". I found that vif store ip addresses
> > in a map which is not ordered (the first item is not the one
> > inserted first).
>
> What is the output of "ip addr" Linux command and "show interfaces"
> xorpsh command?
> I am a bit surprised that the gre interface itself lists the public
> IP address as one of its own addresses.
>
> Also, what your "interfaces" section looks like?
Never mind the above. I just tested it myself and indeed both
addresses are listed by "ip addr" and "show interfaces".
I did the same on FreeBSD and "show interfaces" correctly returns
only the tunnel IP address, so it seems there is a Linux-specific
bug in the FEA the way it handles the p2p IP addresses.
> If you are using the "default-system-config" statement,
> you can try to explicitly configure/specify the tunnel IP address
> for the GRE interface.
Please try the above as a short-term solution while I fix the Linux
GRE issue.
Regards,
Pavlin
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