The value of tmnxMobProfPolUntRedirectAddr specifies the IP address
to redirect the http requests to upon credit expiration, when the
value of tmnxMobProfPolUntFlwGateStatus is set to 'redirect'. If
the value of the corresponding tmnxMobProfPolUntRedirectAdrType is
'dns', then the IP address will be obtained via DNS A-Record query.