Order is not tidiness — it is what makes the alignment pass
Same block, same three customers, two orders. Largest first leaves one clean tail. Smallest first leaves the same addresses as a scar between tenants — and next week it overflows instead.
The block
14.24.74.0 / 24
Engineering
120 → 128 · /25
Accounts
60 → 64 · /26
Reception
10 → 16 · /28
The same 256 addresses, laid out twice
Largest first
128, then 64, then 16 — the fussiest tenant while the building is empty
Smallest first
16, then 64, then 128 — “next free” instead of “next legal”
bitsarebits.com · CSE 316 — Data Communication & Networking · Forouzan §18.4