Sorry, been away from the boards a few days, but yes I have added your suggested modification to the live copy of nic_config_tivo.
I was not able recreate your fault, which is strange.
I think this may only be an issue if you have upgraded to 1.6.2 from 1.5 or less.
New installs with 1.6.2 should not have any issues.
Either way the update will work for either.
Peter.