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Description of problem:
After updating to RHEL 8 (from RHEL 7), sftp to ipv6 address fails. This is working in RHEL 7 and RHEL 9 hence this is a request to backport this into RHEL 8.
Version-Release number of selected component (if applicable):
RHEL 8 and openssh-clients* (/bin/sftp)
How reproducible: Every time.
Steps to Reproduce:
1. Login to RHEL 8 system and try to sftp to any ipv6 address as below - It FAILS
user@host:~$ sftp user@[xxxx:470:c2d7:903:xxxx:ed95:f06:a66e]
ssh: Could not resolve hostname [xxx:470:c2d7:903:xxxx:ed95:f06:a66e]: Name or service not known
Connection closed
2. Login to RHEL 7/9 system and try to sftp to any ipv6 address as below - It succeeds.
user@host:~$ sftp user@[xxxx:470:c2d7:903:xxxx:ed95:f06:a66e]
user@xxxx:470:c2d7:903:xxxx:ed95:f06:a66e's password:
Connected to xxxx:470:c2d7:903:xxxx:ed95:f06:a66e.
3. Note that if we use a colon (:) at the end of sftp command as below in RHEL 8 it works -
user@host:~$ sftp user@[xxxx:470:c2d7:903:xxxx:ed95:f06:a66e]:
user@xxxx:470:c2d7:903:xxxx:ed95:f06:a66e's password:
Connected to xxxx:470:c2d7:903:xxxx:ed95:f06:a66e.
Actual results:
Expected results:
In RHEL 8 sftp should accept ipv6 address when specified in square brackets, just like in RHEL 7/9.
Additional info:
In RHEL 9, the IPv6 addresses in square brackets still don't work, with the only exception of "sftp". This backport request is very specific to sftp client.
Comment 2Dmitry Belyavskiy
2022-12-14 12:41:17 UTC
Probably the missing commit is 25e3bccbaa63d27b9d5e09c123f1eb28594d2bd6
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory (openssh bug fix and enhancement update), and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHBA-2023:3032
Comment 18Red Hat Bugzilla
2023-09-19 04:31:14 UTC
The needinfo request[s] on this closed bug have been removed as they have been unresolved for 120 days