我有一个dnssec区域，希望使用sshfp在中发布ssh密钥。
因此，在持有密钥的主机上，我运行：
ssh-keygen -r localhost
这给了我结果：
localhost IN SSHFP 1 1 223458a4e3f4cae23a2365a127a9fc5dbfc4df0b
localhost IN SSHFP 1 2 cf04e11c129c465e90afc3fc68b0a9c6f256e7c3dc2f0ef0d61557f5848cc2bb
然后我把它放在我的dnssec区域（显然是正确的主机名），退出该区域并通过dig查询进行检查。一切都很好。
然后，ssh查询显示错误：
stephane@luciole:~$ ssh -v -o VerifyHostKeyDNS=yes host
OpenSSH_6.6.1, OpenSSL 1.0.1i 6 Aug 2014
debug1: Reading configuration data /home/stephane/.ssh/config
debug1: /home/stephane/.ssh/config line 1: Applying options for host
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug1: Connecting to host [2001:16d8:d0:205::5]
debug1: Connection established.
debug1: identity file /home/stephane/.ssh/id_rsa type 1
debug1: identity file /home/stephane/.ssh/id_rsa-cert type -1
debug1: identity file /home/stephane/.ssh/id_dsa type -1
debug1: identity file /home/stephane/.ssh/id_dsa-cert type -1
debug1: identity file /home/stephane/.ssh/id_ecdsa type -1
debug1: identity file /home/stephane/.ssh/id_ecdsa-cert type -1
debug1: identity file /home/stephane/.ssh/id_ed25519 type -1
debug1: identity file /home/stephane/.ssh/id_ed25519-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_6.6.1p1 Debian-7
debug1: Remote protocol version 2.0, remote software version OpenSSH_6.6
debug1: match: OpenSSH_6.6 pat OpenSSH_6.5*,OpenSSH_6.6* compat 0x14000000
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-ctr hmac-md5-etm@openssh.com none
debug1: kex: client->server aes128-ctr hmac-md5-etm@openssh.com none
debug1: sending SSH2_MSG_KEX_ECDH_INIT
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ECDSA 4d:57:c1:77:2d:cf:6b:46:d4:83:24:3c:b7:d4:0d:67
debug1: found 4 insecure fingerprints in DNS
debug1: mismatching host key fingerprint found in DNS
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that a host key has just been changed.
The fingerprint for the ECDSA key sent by the remote host is
4d:57:c1:77:2d:cf:6b:46:d4:83:24:3c:b7:d4:0d:67.
Please contact your system administrator.
Update the SSHFP RR in DNS with the new host key to get rid of this message.
debug1: checking without port identifier
The authenticity of host '[host] ([2001:16d8:d0:205::5])' can't be established.
ECDSA key fingerprint is 4d:57:c1:77:2d:cf:6b:46:d4:83:24:3c:b7:d4:0d:67.
No matching host key fingerprint found in DNS.
Are you sure you want to continue connecting (yes/no)?
那我为什么要吃？
我现在在安全的环境中工作，可以直接访问服务器的本地网络。不可能有MITM。
在创建dns sshfp时，我没有注意到我只有四个sshfp-RR，而我有三个ssh密钥（每个密钥两个sshfp）。
因此，我返回并在ssh目录中逐个生成sshfp，并与dns中的内容进行比较。我好像没有ecdsa钥匙。
所以我专门用这个密钥生成sshfp。在区域中注册并签名。之后，当我尝试使用VerifyHostKeyDNS和verbose进行ssh连接时，ssh说它找到了正确的ssh指纹！
cd /etc/ssh
ls
ssh_config
ssh_dsa_key
ssh_dsa_key.pub
...
ssh-keygen -r host -f ssh_host_ecdsa_key