I took advantage of a FreeDNS provider for these systems. Reverse DNS only works on tier one since that uses a prefix that can be defined in the DNS provider. Hurricane Electric's tunnel broker makes delegation for reverse number to name mapping easy so use it to your advantage.
All hosts are in the chickenkiller.com domain and use the simple names tier1, tier2, and tier3. However, the site uses a vanity domain of azcrumpty.dyndns.org for presentation.
debian: azcrumpty$ host azcrumpty.dyndns.org
azcrumpty.dyndns.org has address 0.0.0.0
azcrumpty.dyndns.org has IPv6 address 2001:470:f379:31::10
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