Ryuji Yokoyama wrote:
>
> Hello All!
>
> I just upgraded from RH5.0 to 5.1 and got a problem. Whenever I connect to
> ISP, my local host name is changed. For instance, originally my local host
> name is "localhost", but after I connect to ISP, my local host name becomes
> DIAL8-ASYNC44.DIAL.NET.NYU.EDU. The numbers(8 and 44) are different every
> time.
Okay. . . here I am, the wet-eared newbie, trying to explain the
subtleties of DNS and dynamic IP allocation. . . take all information as
suspect.
Here's what I think is happening. Your ISP assigns your ppp interface
to an IP address dynamically depending upon which modem gets your call.
On their end, each of those dialup lines has a DNS name. So, for
example, their "modem #0" might be assigned to IP address 1.2.3.1, and
have DNS name DIAL8-ASYNC44.DIAL.NET.NYU.EDU. The next time you dial
in, you might get "modem 1" with IP address 1.2.3.2, which might map to
the DNS name DIAL9-ASYNC45.DIAL.NET.NYU.EDU.
Now, that name and IP address should only apply to your ppp interface,
not to your machine; what does your /etc/hosts file say? Are you
connected to any net other than through your ppp connection?
Why is this a problem?
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