(To the tune of "25 or 6 to 4" by Chicago)

Waiting for IPv6 day
Migrate IPv4 some way
Mechanisms exist to try
Giving up I close my eye
Patching Crossovers on the floor
ISATAP or 6to4

Staring blindly at the specs
Wondering “what the heck”
Wanting just to stay awake
Wondering how much can I take
Should I keep IPv4
ISATAP or 6to4

Feeling like I am too deep
Spinning head I must get sleep
Searching for someway to fix
This stupid IPv6
ISATAP or 6to4
ISATPA or 6to4