[ih] 13 the unlucky number

[Carsten Bormann]

Since IENs can be a bit obscure, here are two URLs:

> [2] Strazisar, V., "Gateway Routing: An Implementation Specification,"
> IEN-30, Bolt Beranek and Newman Inc., August 1979.

https://www.rfc-editor.org/rfc/ien/ien30.pdf
(That says “April 11, 1978”.)

> [3] Strazisar, V., "How to Build a Gateway," IEN-109, Bolt Beranek and
> Newman Inc., August 1979.

https://www.rfc-editor.org/rfc/ien/ien109.txt
(https://www.rfc-editor.org/rfc/ien/ien109.html is the same with page/section anchors.)

Grüße, Carsten