IPv6 Network subnets in PATTERNS ?

[Brian Candler]

On 09/10/2025 07:43, hvjunk wrote:
>   Reading on PATTERNS in ssh_config(5), I noticed only IPv4 wildcard and range options, but nothing for IPv6?
>
>   I especially are interested in PATTERNS that have network subnets, like 2001:0DB8:dead:beef::/64 and 192.168.128.0/23

It's not very sophisticated: it's just character matching as documented. Try:

Host 2001:db8:dead:beef::*

Host 192.168.128.*,192.168.129.*

Note that it's only matching on what the user types as the hostname(*) (e.g. "ssh foo at 2001:db8:dead:beef::a:b:c:d"), not the resolved IP address.

(*) Optionally also after hostname canonicalization