3. Distribution Router

ip route (lanPrefix)/0 (wanPrefix + 2)

int S0.distDLCI

ip addr (wanPrefix + 1) 255.255.255.252

! blackhole as appropriate

----------------------------------------

<distrouter-s0-DLCI> IN A (wanPrefix + 1)

(wanPrefix + 2)

IN PTR <distrouter-s0-DLCI>

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