* [pve-devel] [PATCH pve-network 0/1] evpn: prevent route leaking
@ 2021-04-08 8:45 Alexandre Bruyelles
2021-04-08 8:45 ` [pve-devel] [PATCH pve-network 1/1] zones: evpn: add a default unreachable, to prevent vrf leak Alexandre Bruyelles
0 siblings, 1 reply; 3+ messages in thread
From: Alexandre Bruyelles @ 2021-04-08 8:45 UTC (permalink / raw)
To: pve-devel; +Cc: Alexandre Bruyelles
From: Alexandre Bruyelles <git@jack.fr.eu.org>
Alexandre Bruyelles (1):
zones: evpn: add a default unreachable, to prevent vrf leak
PVE/Network/SDN/Zones/EvpnPlugin.pm | 1 +
1 file changed, 1 insertion(+)
--
2.31.0
^ permalink raw reply [flat|nested] 3+ messages in thread
* [pve-devel] [PATCH pve-network 1/1] zones: evpn: add a default unreachable, to prevent vrf leak
2021-04-08 8:45 [pve-devel] [PATCH pve-network 0/1] evpn: prevent route leaking Alexandre Bruyelles
@ 2021-04-08 8:45 ` Alexandre Bruyelles
2021-04-09 10:55 ` [pve-devel] applied: " Thomas Lamprecht
0 siblings, 1 reply; 3+ messages in thread
From: Alexandre Bruyelles @ 2021-04-08 8:45 UTC (permalink / raw)
To: pve-devel; +Cc: Alexandre Bruyelles
From: Alexandre Bruyelles <git@jack.fr.eu.org>
On Linux, when no route is found in a vrf, it somehow fallback
to the default routing table. In our case, that means a leak
from the overlay to the underlay.
Adding a low priority unreachable catch-all route is the way to go, as
per the doc: https://www.kernel.org/doc/Documentation/networking/vrf.txt
Signed-off-by: Alexandre Bruyelles <git@jack.fr.eu.org>
---
PVE/Network/SDN/Zones/EvpnPlugin.pm | 1 +
1 file changed, 1 insertion(+)
diff --git a/PVE/Network/SDN/Zones/EvpnPlugin.pm b/PVE/Network/SDN/Zones/EvpnPlugin.pm
index e6ee839..ca000cf 100644
--- a/PVE/Network/SDN/Zones/EvpnPlugin.pm
+++ b/PVE/Network/SDN/Zones/EvpnPlugin.pm
@@ -134,6 +134,7 @@ sub generate_sdn_config {
#vrf interface
@iface_config = ();
push @iface_config, "vrf-table auto";
+ push @iface_config, "post-up ip route add vrf $vrf_iface unreachable default metric 4278198272";
push(@{$config->{$vrf_iface}}, @iface_config) if !$config->{$vrf_iface};
if ($vrfvxlan) {
--
2.31.0
^ permalink raw reply [flat|nested] 3+ messages in thread* [pve-devel] applied: [PATCH pve-network 1/1] zones: evpn: add a default unreachable, to prevent vrf leak
2021-04-08 8:45 ` [pve-devel] [PATCH pve-network 1/1] zones: evpn: add a default unreachable, to prevent vrf leak Alexandre Bruyelles
@ 2021-04-09 10:55 ` Thomas Lamprecht
0 siblings, 0 replies; 3+ messages in thread
From: Thomas Lamprecht @ 2021-04-09 10:55 UTC (permalink / raw)
To: Proxmox VE development discussion, Alexandre Bruyelles
Cc: Alexandre Bruyelles
On 08.04.21 10:45, Alexandre Bruyelles wrote:
> From: Alexandre Bruyelles <git@jack.fr.eu.org>
>
> On Linux, when no route is found in a vrf, it somehow fallback
> to the default routing table. In our case, that means a leak
> from the overlay to the underlay.
> Adding a low priority unreachable catch-all route is the way to go, as
> per the doc: https://www.kernel.org/doc/Documentation/networking/vrf.txt
>
> Signed-off-by: Alexandre Bruyelles <git@jack.fr.eu.org>
> ---
> PVE/Network/SDN/Zones/EvpnPlugin.pm | 1 +
> 1 file changed, 1 insertion(+)
>
>
applied, thanks!
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2021-04-09 10:56 UTC | newest]
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2021-04-08 8:45 [pve-devel] [PATCH pve-network 0/1] evpn: prevent route leaking Alexandre Bruyelles
2021-04-08 8:45 ` [pve-devel] [PATCH pve-network 1/1] zones: evpn: add a default unreachable, to prevent vrf leak Alexandre Bruyelles
2021-04-09 10:55 ` [pve-devel] applied: " Thomas Lamprecht
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