The value of the object svcPwRtSpeAddrPrefix specifies the
pseudo-wire routing prefix of the switch-point node.
An 'inconsistentValue' error is returned if svcPwRtSpeAddrGlobalId is
set to default when svcPwRtSpeAddrPrefix is set to non-default value or
svcPwRtSpeAddrGlobalId is set to non-default when svcPwRtSpeAddrPrefix
is set to default value.