Afterwards the entry looks good like:
# 10.0.4.153:2222 SSH-2.0-OpenSSH_7.4p1 Ubuntu-10
|1|A5Uker2NsxV0OgNrMNT+aaUDrJM=|bsWW57Lhko5h+t6BtjU9u/wkAkw= ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAID4/W/XQvgco3vziMDLT5PyHwuqY9pupyB2NNvpF+9bR
Verified on Xenial and Yakkety.
@Gautier - please go on with your own verification and in the worst case if you can prove it not working change it back to verification-needed or even -failed. I'm away the next few days, but I'm sure cjwatson or powerj who are on this bug can help you in case it is needed.
Prior to updating when scanning from a target I still have ports in the output:
ssh-keyscan -H -p 2222 10.0.4.153 OpenSSH_ 7.4p1 Ubuntu-10 kyicxuuS/ 5p2Tlts= |ziw5AkY9sg/ oRSpkYIuxswDgIf 8=]:2222 ssh-ed25519 AAAAC3NzaC1lZDI 1NTE5AAAAID4/ W/XQvgco3vziMDL T5PyHwuqY9pupyB 2NNvpF+ 9bR
# 10.0.4.153:2222 SSH-2.0-
[|1|nTWrNxylhhw
Upgrading to proposed version.
Afterwards the entry looks good like: OpenSSH_ 7.4p1 Ubuntu-10 OgNrMNT+ aaUDrJM= |bsWW57Lhko5h+ t6BtjU9u/ wkAkw= ssh-ed25519 AAAAC3NzaC1lZDI 1NTE5AAAAID4/ W/XQvgco3vziMDL T5PyHwuqY9pupyB 2NNvpF+ 9bR
# 10.0.4.153:2222 SSH-2.0-
|1|A5Uker2NsxV0
Verified on Xenial and Yakkety.
@Gautier - please go on with your own verification and in the worst case if you can prove it not working change it back to verification-needed or even -failed. I'm away the next few days, but I'm sure cjwatson or powerj who are on this bug can help you in case it is needed.