RE: .255 addresses still not usable after all these years?

[Ian Henderson <ianh () chime net au>]

Valdis.Kletnieks () vt edu wrote on 2008-06-14:

> RFC1519 is 15 years old now.  I *still* heard a trainer (in a Cisco
> class no less) mention class A/B/C in the last few months.  Some evil
> will obviously take generations to fully stamp out.

We've faced two issues with .255 and .0:

- Using /31 links Windows tracert * * *'s on .0 addresses. Had many users who thought they knew better complain about 
it.

- Using a .255 loopback on a Cisco 6500 SNMP requests would return from the closest interface IP address. Combined with 
a specific version of SNMP libraries (which I can't recall right now), this caused queries to fail.

Rgds,


- I.

--
Ian Henderson, CCIE #14721
Senior Network Engineer, iiNet Limited