On Feb 6, 2013, at 6:09 PM, Eric Fort wrote:
This is fine if you are using AX.25 for link layer media, but I don't see AX.25 being the only link layer used on AMPRNET by a long shot. 802.11 is growing in use and other link layer technologies exist. While info from DNS may not meet a requirement for Identification requirement, having the callsign of the party responsible (either directly as in the case of a gateway, or indirectly as in the case of an ISP) for the host required as part of the FQDN is helpful in tracing network issues.
This concern is usually addressed through information in the whois database, which includes, among other things, administrative and technical contacts for domain names. This allows domain names to reflect what the service is, not who runs it or how it's connected. This is how the internet and most local networks work, because this isolates network topology changes and administrative changes from the users of the service, who don't care about these details.