I created a NAT pool and this message appeared on the console.
I get no hits at all on the cisco web site or google.
R2(config)#$ NP.TFTP_from_R2 10.1.0.8 10.1.0.254 netmask 255.255.255.0 R2(config)#
*Sep 6 20:53:24.527: %LINEPROTO-5-UPDOWN: Line protocol on Interface NVI0, changed state to up
#sh ip int br Serial1/7 unassigned YES NVRAM administratively down down NVI0 unassigned NO unset up up