Under what conditions is the status of OSPF set to invalid adv

display ip routing-table 10.11.11.11 verbose
Routing Table : Public
Summary Count : 2

Destination: 10.11.11.11/32
Protocol: OSPF Process ID: 588
Preference: 10 Cost: 22
NextHop: 10.1.200.2 Interface: Vlanif10
RelayNextHop: 0.0.0.0 Neighbour: 0.0.0.0
Label: NULL Tunnel ID: 0x0
SecTunnel ID: 0x0
BkNextHop: 0.0.0.0 BkInterface:
BkLabel: 0 Tunnel ID: 0x0
SecTunnel ID: 0x0
State: Invalid Adv Age: 00h57m42s
Tag: 0

Destination: 10.11.11.11/32
Protocol: ISIS Process ID: 46435
Preference: 15 Cost: 10
NextHop: 172.16.234.18 Interface: Vlanif20
RelayNextHop: 0.0.0.0 Neighbour: 0.0.0.0
Label: NULL Tunnel ID: 0x83810BD5
SecTunnel ID: 0x0
BkNextHop: 0.0.0.0 BkInterface:
BkLabel: 0 Tunnel ID: 0x0
SecTunnel ID: 0x0
State: Active Adv Age: 15h13m42s
Tag: 0
In the preceding command output information, the state field is set to Invalid Adv because:

A route, such as a direct route, with a smaller preference, exists.
The route is filtered out by the filter policy.
The output interface is on a sham link.

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