[FRR]Fixing route update on duplicate link up event in promiscuous mode

[dgsudharsan]

Why I did it

Fixing route update on duplicate link up event in promiscuous mode. When running tcpdump on interfaces which have BGP neighbors a duplicate link up event is received as the interface enters promiscuous mode. However these shouldn't trigger route updates. Due to the commit 58592be57783a3b24e7351af2a5afc61299768df route updates are published.

2025 Feb 19 18:00:14.893285 r-leopard-72 DEBUG bgp#zebra[36]: [V6YM8-PV4KB] MESSAGE: ZEBRA_INTERFACE_UP PortChannel101 vrf default(0)
2025 Feb 19 18:00:14.893492 r-leopard-72 INFO bgp#staticd[49]: [YGHNZ-57CJY] Interface enabled Removing. PortChannel101 SIDs that depend on the interface
2025 Feb 19 18:01:17.900554 r-leopard-72 DEBUG bgp#zebra[36]: [V6YM8-PV4KB] MESSAGE: ZEBRA_INTERFACE_UP PortChannel101 vrf default(0)
2025 Feb 19 18:01:17.900554 r-leopard-72 DEBUG bgp#zebra[36]: [V6YM8-PV4KB] MESSAGE: ZEBRA_INTERFACE_UP PortChannel102 vrf default(0)
2025 Feb 19 18:01:17.900819 r-leopard-72 INFO bgp#staticd[49]: [YGHNZ-57CJY] Interface enabled Removing. PortChannel101 SIDs that depend on the interface
2025 Feb 19 18:01:17.900819 r-leopard-72 INFO bgp#staticd[49]: [YGHNZ-57CJY] Interface enabled Removing. PortChannel102 SIDs that depend on the interface
2025 Feb 19 18:01:38.689072 r-leopard-72 DEBUG bgp#zebra[36]: [V6YM8-PV4KB] MESSAGE: ZEBRA_INTERFACE_UP Ethernet0 vrf default(0)
2025 Feb 19 18:01:38.689072 r-leopard-72 INFO bgp#staticd[49]: [YGHNZ-57CJY] Interface enabled Removing. Ethernet0 SIDs that depend on the interface

Work item tracking

• Microsoft ADO (number only):

How I did it

Reverted the commit that causes the issue and added as patch

How to verify it

Running tcpdump on bgp neighbor and verifying if there are no route updates.

Which release branch to backport (provide reason below if selected)

• 201811
• 201911
• 202006
• 202012
• 202106
• 202111
• 202205
• 202211
• 202305

Tested branch (Please provide the tested image version)

Description for the changelog

Link to config_db schema for YANG module changes

A picture of a cute animal (not mandatory but encouraged)

[mssonicbld]

/azp run Azure.sonic-buildimage

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[donaldsharp]

LGTM

[dgsudharsan]

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[mssonicbld]

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[dgsudharsan]

/azpw run Azure.sonic-buildimage

[mssonicbld]

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