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| author | Gustavo Luiz Duarte <gustavold@gmail.com> | 2026-09-03 17:26:06 +0100 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-09-09 18:09:53 -0700 |
| commit | a4b9392ef046bd8a165fb5091adebc2c6ea46890 (patch) | |
| tree | 6075549306c9be26818acc5ea7467137c1d8a080 | |
| parent | 7be9bfb7689e875fc94b711dcafe27c86413c966 (diff) | |
| download | linux-next-a4b9392ef046bd8a165fb5091adebc2c6ea46890.tar.gz linux-next-a4b9392ef046bd8a165fb5091adebc2c6ea46890.zip | |
docs: netconsole: document local_ip auto-selection
An unset local_ip is auto-populated from the egress interface at enable
time, but any value the user writes, including 0.0.0.0, is used as-is.
This deviates from the behavior prior to "netconsole: use the address
family instead of the ipv6 flag", which interpreted 0.0.0.0 as unset.
Document this so the distinction between "unset" and "set to 0.0.0.0" is
clear.
Reviewed-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Gustavo Luiz Duarte <gustavold@gmail.com>
Link: https://patch.msgid.link/20260903-netcons_ipv6-v4-7-bdd183c844d3@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | Documentation/networking/netconsole.rst | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/networking/netconsole.rst b/Documentation/networking/netconsole.rst index 4ab5d7b05cf1..694bca4803d5 100644 --- a/Documentation/networking/netconsole.rst +++ b/Documentation/networking/netconsole.rst @@ -141,6 +141,11 @@ The interface exposes these parameters of a netconsole target to userspace: transmit_errors Number of packet send errors (read-only) =============== ================================= ============ +local_ip is optional: if it is left unset, netconsole derives a source +address from the egress interface when the target is enabled. Writing any +value to it, including 0.0.0.0, uses that value verbatim and disables the +automatic selection. + The "enabled" attribute is also used to control whether the parameters of a target can be updated or not -- you can modify the parameters of only disabled targets (i.e. if "enabled" is 0). |