Adding tunnels with iproute2 and 2.6.13 kernel

Hello,
I was peviously running 2.6.11 kernel.
Using iproute2 tools, I was able (and still am able if I go back that
kernel) to create a tunnel as follows:

ip tunnel add (name) mode sit ttl 255 remote any local (ipv4 address)
or
ip tunnel add (name) mode sit ttl 255 remote (ipv4 addess) local (ipv4
address)


This would create the tunnel with no problems. Note: "sit0" is a device in
my device list per a call to "ifconfig".

I have now upgraded to 2.6.13 and am still using the same iproute2 tools.

When I attempt to create the tunnel(s) using the same command(s) as above
under this kernel, I receive the error:

"No such device." 

For some reason it does not see "sit0" as a device although it is a device
that returns from a call to "ifconfig".

Has anyone seen an issue such as this and have you been able to resolve it?

Thanks,
Phil Bellino