[OpenAFS] NetRestrict - change existing openafs server to use a single network interface

[Vladimir Konrad]

hello,

we have a openafs server (configured before i turned up) with two
ehernet network interfaces (one for normal network activity, one for
backup access). this is a production server.

the operating system is Debian Woody, openafs 1.2.11...

the fileserver currently tries to use both network interfaces but i need
to make it use only one.

i tried to use NetRestrict file (in different locations) but after the
restart of the fileserver, nothing changes. i suspect that this has to
do something with existing volume entries because "vos changeaddr
-remove" fails with complaint.

what is the correct method to "remove" use of a network interface on
openafs fileserver with existing volumes?

vladimir