[Xorp-users] Getting problem with MLD

Pavlin Radoslavov pavlin at ICSI.Berkeley.EDU
Tue Oct 7 09:36:29 PDT 2008


Tushar Mehta <tushar.mehta at einfochips.com> wrote:

> I am getting problem in XORP-1.4 with MLD protocol.
> I want to run XORP as a MLD router but it is crashed while booting!!!
> 
> *It seems that my kernel is not supporting IPv6 multicasting!!!*

IPv6 multicast routing support was added to Linux kernel 2.6.26,
hence you need to use a recent OS distribution with that kernel.

On XORP side you need to get the latest code from CVS, which
fixes some compilation issues introduced by kernel 2.6.26:
http://www.xorp.org/cvs.html

Also, have a look at XORP Bugzilla entry 761 in case your Linux
distribution's glibc has a buggy inet6_opt_init() implementation:
http://bugzilla.xorp.org/bugzilla/show_bug.cgi?id=761

Pavlin

> what are the changes required in the XORP configuration file or in kernel?
> 
> My OS specification:
> Fedora Core 5
> kernel version: 2.6.15
> XORP version: 1.4
> 
> Attachments:
> 1) Configuration file which is i am using in this case.
> 2) Snap shot of my desktop when XORP is crashed so you can see what kind of
> messages it is showing when i run it.
> 3) Ethereal Packets, which are captured when XORP booted up.
> 
> /* $XORP: xorp/rtrmgr/config/multicast6.boot,v 1.1 2007/08/29 06:49:43 pavlin Exp $ */
> 
> interfaces {
>     interface eth0 {
> 	vif eth0 {
> 	    address 2001:DB8:10:10:10:10:11:11 {
> 		prefix-length: 64
> 	    }
> 	    /* Note: The IPv6 link-local address must be configured */
> 	    address fe80::1111:1111:1111:1111 {
> 		prefix-length: 64
> 	    }
> 	}
>     }
> }
> 
> fea {
>     unicast-forwarding6 {
> 	disable: false
>     }
> }
> 
> plumbing {
>     mfea6 {
> 	disable: false
> 	interface eth0 {
> 	    vif eth0 {
> 		disable: false
> 	    }
> 	}
> 	interface register_vif {
> 	    vif register_vif {
> 		/* Note: this vif should be always enabled */
> 		disable: false
> 	    }
> 	}
>     }
> }
> 
> protocols {
>     mld {
> 	interface eth0 {
> 	    vif eth0 {
> 		disable: false
> 	    }
> 	}
>     }
> }
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