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zebra: EVPN fix access BD deref of mbr intf (backport #20791)#20834

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Jafaral merged 1 commit intostable/10.5from
mergify/bp/stable/10.5/pr-20791
Feb 13, 2026
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zebra: EVPN fix access BD deref of mbr intf (backport #20791)#20834
Jafaral merged 1 commit intostable/10.5from
mergify/bp/stable/10.5/pr-20791

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@mergify mergify bot commented Feb 13, 2026

a bond interface part of bridge is ESI bond,
when a bond interface is unlinked from bridge,
then frr access-bd needs to deference from bridge
access BD for each VLAN so it does not show up as
stale member interface.

torm-11# show evpn access-vlan detail
VLAN: br_default.1001
 VxLAN Interface: vxlan48
 SVI: vlan1001
 L2-VNI: 1001
 Member Count: 4
 VNI-count: 1
 Members:
    hostbond_5
    hostbond_3
    hostbond_4

the hostbond_3 and hosbtond_4 are removed from bridge but they still show up under the member list.

With the fix:
The dereference of slave member interface
from bridge/ access-vlan happens properly.

torm-11# show evpn access-vlan detail
VLAN: br_default.1001
 VxLAN Interface: vxlan48
 SVI: vlan1001
 L2-VNI: 1001
 Member Count: 2
 VNI-count: 1
 Members:
    hostbond_6
    hostbond_5

This is an automatic backport of pull request #20791 done by [Mergify](https://mergify.com).

a bond interface part of bridge is ESI bond,
when a bond interface is unlinked from bridge,
then frr access-bd needs to deference from bridge
access BD for each VLAN so it does not show up as
stale member interface.

torm-11# show evpn access-vlan detail
VLAN: br_default.1001
 VxLAN Interface: vxlan48
 SVI: vlan1001
 L2-VNI: 1001
 Member Count: 4
 VNI-count: 1
 Members:
    hostbond_5
    hostbond_3
    hostbond_4

the hostbond_3 and hosbtond_4 are removed from bridge but
they still show up under the member list.

With the fix:
The dereference of slave member interface
from bridge/ access-vlan happens properly.

torm-11# show evpn access-vlan detail
VLAN: br_default.1001
 VxLAN Interface: vxlan48
 SVI: vlan1001
 L2-VNI: 1001
 Member Count: 2
 VNI-count: 1
 Members:
    hostbond_6
    hostbond_5

Ticket: #4882392

Signed-off-by: Chirag Shah <chirag@nvidia.com>
(cherry picked from commit 3867243)
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greptile-apps bot commented Feb 13, 2026

Target branch is not in the allowed branches list.

@Jafaral Jafaral merged commit 3901b6a into stable/10.5 Feb 13, 2026
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@mergify mergify bot deleted the mergify/bp/stable/10.5/pr-20791 branch February 13, 2026 21:49
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