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[Bug 1497263] Re: Unable to negotiate a key exchange method

 

I really appreciate you're taking some time to answer this.

However, there's some confusion here: you're answering in this thread to
another issue which is located in another thread
(https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/1522190). My
configuration is not the same. could you try to reproduce the new issue
with my new settings and answer in the new thread?

In the meantime, I'll post more information about sshd_config & ssh_config in the new thread. 
You were right: I'm not using a default configuration, but openssh should also work in other situations that the default one, right?

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https://bugs.launchpad.net/bugs/1497263

Title:
  Unable to negotiate a key exchange method

Status in openssh package in Ubuntu:
  Incomplete

Bug description:
  Client: Ubuntu Server 15.04 with openssh-client 6.7p1
  Server: Ubuntu cloud server 15.04 with openssh-server 6.7p1

  Connection trace:
  root@msi-ge60-ubuntu:/media/actionmystique/SAMSUNG-Ext4/KVM-Qemu/VMs# ssh -v -p 22 -i ./KVM-Ubuntu-Server-15.04-ubuntu-id_rsa ubuntu@172.16.100.245
  OpenSSH_6.7p1 Ubuntu-5ubuntu1.3, OpenSSL 1.0.1f 6 Jan 2014
  debug1: Reading configuration data /etc/ssh/ssh_config
  debug1: /etc/ssh/ssh_config line 19: Applying options for *
  debug1: Connecting to 172.16.100.245 [172.16.100.245] port 22.
  debug1: Connection established.
  debug1: key_load_private_type: No such file or directory
  debug1: key_load_private_cert: No such file or directory
  debug1: key_load_private_cert: No such file or directory
  debug1: key_load_private_cert: No such file or directory
  debug1: key_load_private_cert: No such file or directory
  debug1: key_load_private_type: No such file or directory
  debug1: permanently_set_uid: 0/0
  debug1: identity file ./KVM-Ubuntu-Server-15.04-ubuntu-id_rsa type 1
  debug1: key_load_public: No such file or directory
  debug1: identity file ./KVM-Ubuntu-Server-15.04-ubuntu-id_rsa-cert type -1
  debug1: identity file /root/.ssh/id_rsa type 1
  debug1: key_load_public: No such file or directory
  debug1: identity file /root/.ssh/id_rsa-cert type -1
  debug1: Enabling compatibility mode for protocol 2.0
  debug1: Local version string SSH-2.0-OpenSSH_6.7p1 Ubuntu-5ubuntu1.3
  debug1: Remote protocol version 2.0, remote software version OpenSSH_6.7p1 Ubuntu-5ubuntu1.3
  debug1: match: OpenSSH_6.7p1 Ubuntu-5ubuntu1.3 pat OpenSSH* compat 0x04000000
  debug1: SSH2_MSG_KEXINIT sent
  debug1: SSH2_MSG_KEXINIT received
  debug1: kex: server->client aes128-ctr hmac-sha1 none
  debug1: kex: client->server aes128-ctr hmac-sha1 none
  Unable to negotiate a key exchange method

  Am I missing something?

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References