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From: Maximiliano Sandoval <m.sandoval@proxmox.com>
To: pve-devel@lists.proxmox.com
Subject: [pve-devel] [PATCH container] fix #7156: setup: separate dns list with semicolons
Date: Wed, 17 Dec 2025 16:06:14 +0100	[thread overview]
Message-ID: <20251217150620.829190-1-m.sandoval@proxmox.com> (raw)

Network manager uses GLib's key file format [1]. As per `man 5
nm-settings-keyfile`:

> lists are separated by character ;

additionally, table 6 contains an example:

> Example: dns=1.2.3.4;8.8.8.8;8.8.4.4;

[1] https://docs.gtk.org/glib/struct.KeyFile.html

Signed-off-by: Maximiliano Sandoval <m.sandoval@proxmox.com>
---

Running `nmcli` with this patch on a new rockylinux 10 container results in 

```
DNS configuration:
        servers: 10.10.10.2 10.10.10.22
        domains: testinstall
        interface: eth0
```

and 
```
$ grep 'dns=' /etc/NetworkManager/system-connections/eth0.nmconnection
dns=10.10.10.2;10.10.10.22
```

and domain resolution seems to works as expected.


 src/PVE/LXC/Setup/CentOS.pm | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/PVE/LXC/Setup/CentOS.pm b/src/PVE/LXC/Setup/CentOS.pm
index 0826977..7bccca2 100644
--- a/src/PVE/LXC/Setup/CentOS.pm
+++ b/src/PVE/LXC/Setup/CentOS.pm
@@ -244,7 +244,7 @@ sub setup_network_with_networkmanager {
                 }
             }
             if (@name_servers_v4) {
-                $data .= "dns=" . join(',', @name_servers_v4) . "\n";
+                $data .= "dns=" . join(';', @name_servers_v4) . "\n";
                 $data .= "dns-search=" . join(' ', PVE::Tools::split_list($searchdomains)) . "\n"
                     if $searchdomains;
             }
@@ -270,7 +270,7 @@ sub setup_network_with_networkmanager {
                 }
             }
             if (@name_servers_v6) {
-                $data .= "dns=" . join(',', @name_servers_v6) . "\n";
+                $data .= "dns=" . join(';', @name_servers_v6) . "\n";
                 $data .= "dns-search=" . join(' ', PVE::Tools::split_list($searchdomains)) . "\n"
                     if $searchdomains;
             }
-- 
2.47.3



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             reply	other threads:[~2025-12-17 15:05 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-12-17 15:06 Maximiliano Sandoval [this message]
2025-12-17 21:31 ` Thomas Lamprecht
2025-12-17 21:36 ` Thomas Lamprecht
2025-12-18  8:21   ` Maximiliano Sandoval
2025-12-18 14:09     ` Thomas Lamprecht
2025-12-18 15:04       ` [pve-devel] superseded: " Maximiliano Sandoval

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