From 9219b5e2e0f2a9d6aa181fc6bc460459d727f399 Mon Sep 17 00:00:00 2001 From: Christian Breunig Date: Wed, 20 Dec 2023 22:25:47 +0100 Subject: vrf: T591: define sysctl setting for net.vrf.strict_mode Enable/Disable VRF strict mode, when net.vrf.strict_mode=0 (default) it is possible to associate multiple VRF devices to the same table. Conversely, when net.vrf.strict_mode=1 a table can be associated to a single VRF device. A VRF table can be used by the VyOS CLI only once (ensured by verify()), this simply adds an additional Kernel safety net, but a requirement for IPv6 segment routing headers. (cherry picked from commit 10701108fecb36f7be7eb7ef5f1e54e63da5fb4e) --- src/conf_mode/vrf.py | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'src/conf_mode/vrf.py') diff --git a/src/conf_mode/vrf.py b/src/conf_mode/vrf.py index 37625142c..9b1b6355f 100755 --- a/src/conf_mode/vrf.py +++ b/src/conf_mode/vrf.py @@ -214,6 +214,18 @@ def apply(vrf): # Delete the VRF Kernel interface call(f'ip link delete dev {tmp}') + # Enable/Disable VRF strict mode + # When net.vrf.strict_mode=0 (default) it is possible to associate multiple + # VRF devices to the same table. Conversely, when net.vrf.strict_mode=1 a + # table can be associated to a single VRF device. + # + # A VRF table can be used by the VyOS CLI only once (ensured by verify()), + # this simply adds an additional Kernel safety net + strict_mode = '0' + # Set to 1 if any VRF is defined + if 'name' in vrf: strict_mode = '1' + sysctl_write('net.vrf.strict_mode', strict_mode) + if 'name' in vrf: # Separate VRFs in conntrack table # check if table already exists -- cgit v1.2.3