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Great solution for air-gapped environments or 'lights-out' data centers where external TFTP access is blocked. Do you recommend using --network host to simplify VRF access, or is the bridged model safer for these recovery scenarios?
To the person trying to ping the router, it will appear as if the device is down or non-existent (Request Timed Out), effectively "hiding" it from basic discovery.
Glad that fix works for you! If you find that the hop still shows up after the change, you might want to investigate the no ip unreachables command as well—sometimes that's the missing piece for making a hop fully 'stealth'.
They mention assigning this logic to a T1 or ATM interface, which were standard high-speed serial links often used in enterprise routing when this post was likely written.
