From: Stefan Hanreich <s.hanreich@proxmox.com>
To: pve-devel@lists.proxmox.com
Subject: [PATCH pve-docs 1/1] sdn: update description for setting rp_filter
Date: Wed, 25 Mar 2026 11:32:41 +0100 [thread overview]
Message-ID: <20260325103243.216632-1-s.hanreich@proxmox.com> (raw)
Starting with trixie, systemd-sysctl no longer reads /etc/sysctl.conf
[1]. Update the documentation on how to set the rp_filter value to
reflect that change.
[1] https://www.debian.org/releases/trixie/release-notes/issues.en.html#etc-sysctl-conf-is-no-longer-honored
Signed-off-by: Stefan Hanreich <s.hanreich@proxmox.com>
---
pvesdn.adoc | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/pvesdn.adoc b/pvesdn.adoc
index d20a0eb..aa57be3 100644
--- a/pvesdn.adoc
+++ b/pvesdn.adoc
@@ -1408,7 +1408,9 @@ If you have multiple gateway nodes, you should disable the `rp_filter` (Strict
Reverse Path Filter) option, because packets can arrive at one node but go out
from another node.
-Add the following to `/etc/sysctl.conf`:
+Add the following to `/etc/sysctl.d/z-rp-filter.conf` (the z- prefix is
+important, because PVE ships a pve-firewall configuration file that sets
+rp_filter to 0):
-----
net.ipv4.conf.default.rp_filter=0
--
2.47.3
reply other threads:[~2026-03-25 10:32 UTC|newest]
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