> Another issue with "abc" is simply that it's so short that
> a clash with something else is more likely than for a long
> identifier.

an acronym with three letters is too short?

> Further arguments for "rfc3465" are:
> 
>  - There's prior art.

if you mean rfc1323, it's rather an execption (timestamps, sack, newreno, ...)
and, IMO, a mistake.

>  - It's bijective i.e. you'll find it when searching for
>    this RFC as well as the RFC when searching for this
>    option.

it isn't a problem as far as sysctl -d and/or other documents 
have rfc numbers.

>  - The TV channel won't sue you.

a good point. :)

after all, it's a matter of taste, and continuing this discussion
doesn't buy us much.  let's ask core a decision.
(maybe i'll abstain from core voting on this.)

YAMAMOTO Takashi