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TWSD-947 IPv6 Configuration Wiped on VLAN Interfaces After Upgrading from 10.4.2.x to 10.7.2.x on AVX vAPV Instances || CBI Customer

Review Request #1001 — Created Aug. 4, 2025 and submitted — Latest diff uploaded

Information
timlai
APV10
rel_apv_10_7
TWSD-947
Reviewers
jasonchang, kevin.poh, timsu, weikai 
Root Cause:

    vAPV uses /ca/etc/avx_model and /ca/etc/avx_sn to record AVX information for license calculation. 

    However, during a system update, these two files are not copied to the new partition, resulting in a license calculation failure after boot. 

    Consequently, IPv6 configuration fails because it requires a valid license.


Solution:

    If vAPV runs on AVX, avx_model and avx_sn these two files should also copy to the upgraded partion.
Upgrade APV and check ipv6 configuration on vlan interface not deleted.
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