Hello!
I have 2 routers 7206VXR, main and standby. HSRP is configured on all interfaces. Routers terminate VTIs on HSRP adresses, on main routers all VTIs are up and on standby all VTIs are down. I upgraded standby router IOS to 12.4(24)T. After reload all my stanby VTI tunnels are up. When I try to create new tunnel, I get:
Router#sh run int tu1
                            ^
% Invalid input detected at '^' marker.
Router#conf t
Router(config)#int tu1
Router(config-if)#
%LINEPROTO-5-UPDOWN: Line protocol on Interface Tunnel1, changed state to up
It looks like a bug. Last working version seems to be 12.4(15)T8