Re: ipv6 maybe has arrived.
On 2/15/23 07:31, Greg Wooledge wrote:
On Wed, Feb 15, 2023 at 08:30:08AM +0100, Michel Verdier wrote:
Le 15 février 2023 gene heskett a écrit :
gene@bpi54:~$ grep -i bpi54 /etc/hosts
192.168.71.12 bpi54.coyote.den bpi54
gene@bpi54:~$ getent hosts bpi54
fe80::4765:bca4:565d:3c6 bpi54
gene@bpi54:~$ ping -c1 coyote (this machines alias in /etc/hosts)
ping: coyote: Name or service not known
If coyote is really an alias and not part of domain name give us
grep -i coyote /etc/hosts
For what you show bpi54 is the short hostname so you need to do
ping -c1 bpi54
and not
ping -c1 coyote
bpi54 is the machine where Gene is issuing the commands. What we
need to see is bpi54 failing to ping some OTHER machine on his local
network. I don't know whether "coyote" is such a machine, but if it
is then I would have expected to see something like:
gene@bpi54:~$ grep -i coyote /etc/hosts
192.168.71.11 coyote.coyote.den coyote
Which is the case with coyote, its this machines hostname, alias, and
part of the domain name.
Why? Done in homeage to a now long gone smartest dog I ever met, a bitch
that was half coyote. Named Lady by the folks I was working for as a 2nd
job in the 1970's as the bench tech at Norfolk 2-way radio. You could
ask her how much is 2 and 3 ( or some other pair of single digit
numbers) and she would bark the number of the answer times. I've never
met another "dog" that could do that.
followed by a whole bunch of other lines that are false hits, because
for some reason Gene used "coyote" as both a local hostname *and* part
of his local domain name.
correct.
Surely there must be some machine on Gene's network which is in the
/etc/hosts file on bpi54, and which is not named "coyote" or "den".
That's what we want to see.
As I said before, it doesn't even have to be a machine that works and
responds to pings. It could be a printer that he used in 2003 and no
longer exists, but is still in the /etc/hosts file. Anything.
That said, I'm curious about this part oF Gene's result:
gene@bpi54:~$ grep -i bpi54 /etc/hosts
192.168.71.12 bpi54.coyote.den bpi54
gene@bpi54:~$ getent hosts bpi54
fe80::4765:bca4:565d:3c6 bpi54
Where does getent pull that IPv6 address from? That's not what I get
when I look myself up:
unicorn:~$ grep -i unicorn /etc/hosts
127.0.1.1 unicorn.wooledge.org unicorn
unicorn:~$ getent hosts unicorn
127.0.1.1 unicorn.wooledge.org unicorn
I don't understand Gene's result.
Neither do I.
Oh, and one last thing that popped into my head this morning: name
service caching daemons. Is it possible that Gene is running nscd or
something like it, and that this is influencing his results? It might
explain why he felt a need to reboot after changing something.
How would I test that?
.
Cheers, Gene Heskett.
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author, 1940)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
Genes Web page <http://geneslinuxbox.net:6309/>
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