The problem is the entry in your known_hosts file. Previously the name /
ip relationship was different and now it is different. You can safely
remove the entry for that ip/name from /home/larry/.ssh/known_hosts .
The next time you ssh, you will be asked , and once you press yes, it
should be fine there after.
Thanks
*Amit K Nepal
Infrastructure Engineer (RHCE)
omNovia Technologies Inc. <http://www.omnovia.com>
Amit K Nepal <http://www.amitnepal.com>
<http://www.amitnepal.com>*
On 11/30/2012 5:01 PM, Dazed_75 wrote:
I am able to ssh to a machine on the LAN using either host name (my
router has dnsmasq turned on) or IP. That works just fine.
My confusion started when I took a machine called lapdog2 which used
to dual boot Vista and Ubuntu (through several releases) with both
named lapdog2. I would ssh into Ubuntu there with no problem.
I just replaced the hard drive and only installed ubuntu 12.10 and
LinuxMint 14 as a dual boot (yes, it is a bit redundant but I had my
reasons) and named them lapdog0 and lapdog1 respectively. I can still
ssh by name or IP but ssh tells me every time that the host key for
that IP differs from the one stored when it was lapdog2 (entry 8): It
does not seem to tell me there is any difference for lapdog0 (entry
22) vs lapdog1 (entry 23):
larry@hammerhead:~$ ssh lapdog1
Warning: the ECDSA host key for 'lapdog1' differs from the key for
the IP address '192.168.2.124'
Offending key for IP in /home/larry/.ssh/known_hosts:8
Matching host key in /home/larry/.ssh/known_hosts:23
Are you sure you want to continue connecting (yes/no)? yes
Welcome to Linux Mint 14 Nadia (GNU/Linux 3.5.0-17-generic i686)
Welcome to Linux Mint
* Documentation: http://www.linuxmint.com
Last login: Fri Nov 30 16:40:24 2012 from hammerhead.thiel.org
<http://hammerhead.thiel.org>
larry@lapdog1 ~ $ logout
Connection to lapdog1 closed.
larry@hammerhead:~$ ssh lapdog0
Warning: the ECDSA host key for 'lapdog0' differs from the key for
the IP address '192.168.2.124'
Offending key for IP in /home/larry/.ssh/known_hosts:8
Matching host key in /home/larry/.ssh/known_hosts:22
Are you sure you want to continue connecting (yes/no)? yes
Welcome to Ubuntu 12.10 (GNU/Linux 3.5.0-18-generic i686)
* Documentation: https://help.ubuntu.com/
14 packages can be updated.
13 updates are security updates.
Last login: Fri Nov 30 16:21:16 2012 from hammerhead.thiel.org
<http://hammerhead.thiel.org>
larry@lapdog0:~$
The only thing I can think of is that the name does not matter (it was
just resolved by dnsmasq to the same IP) and the old ubuntu was on a
different kernel (one of you told me once that the kernel matters for
ssh by ECDSA key).
But then why would keys 22 and 23 both be used and without complaint
between them? What am I missing?
--
Dazed_75 a.k.a. Larry
Please protect my address like I protect yours. When sending messages
to multiple recipients, use the BCC: (Blind carbon copy). Remove
addresses from a forwarded message body before clicking Send.
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