我突然出现问题SSH进入我的服务器：

ssh -v --@--

OpenSSH_7.2p2 Ubuntu-4ubuntu1,OpenSSL 1.0.2g-fips 1 Mar 2016

debug1: Reading configuration data /home/paul/.ssh/config

debug1: Reading configuration data /etc/ssh/ssh_config

debug1: /etc/ssh/ssh_config line 19: Applying options for *

debug1: Connecting to -- [--] port 22.

debug1: Connection established.

debug1: identity file /home/paul/.ssh/id_rsa type 1

debug1: key_load_public: No such file or directory

debug1: identity file /home/paul/.ssh/id_rsa-cert type -1

debug1: key_load_public: No such file or directory

debug1: identity file /home/paul/.ssh/id_dsa type -1

debug1: key_load_public: No such file or directory

debug1: identity file /home/paul/.ssh/id_dsa-cert type -1

debug1: key_load_public: No such file or directory

debug1: identity file /home/paul/.ssh/id_ecdsa type -1

debug1: key_load_public: No such file or directory

debug1: identity file /home/paul/.ssh/id_ecdsa-cert type -1

debug1: key_load_public: No such file or directory

debug1: identity file /home/paul/.ssh/id_ed25519 type -1

debug1: key_load_public: No such file or directory

debug1: identity file /home/paul/.ssh/id_ed25519-cert type -1

debug1: Enabling compatibility mode for protocol 2.0

debug1: Local version string SSH-2.0-OpenSSH_7.2p2 Ubuntu-4ubuntu1

debug1: Remote protocol version 1.99,remote software version OpenSSH_6.6.1p1

debug1: match: OpenSSH_6.6.1p1 pat OpenSSH_6.6.1* compat 0x04000000

debug1: Authenticating to --:22 as 'root'

debug1: SSH2_MSG_KEXINIT sent

debug1: SSH2_MSG_KEXINIT received

debug1: kex: algorithm: diffie-hellman-group-exchange-sha1

debug1: kex: host key algorithm: ssh-rsa

debug1: kex: server->client cipher: aes128-cbc MAC: hmac-sha1 compression: none

debug1: kex: client->server cipher: aes128-cbc MAC: hmac-sha1 compression: none

debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(2048<7680<8192) sent

debug1: got SSH2_MSG_KEX_DH_GEX_GROUP

ssh_dispatch_run_fatal: Connection to -- port 22: DH GEX group out of range

我已经广泛阅读了这个问题SSH: DH_GEX group out of range,但它似乎没有回答这个问题.我控制客户端和服务器,它们都使用常规的OpenSSH和Ubuntu Linux.没有第三方.错误似乎也有点不同,它并没有抱怨比特化.