change apipa network gw address from .1 to .2

[ZetaoZhuang]

Reason for Change:

currently cns using the same ip address "169.254.128.1" for both apipa gw and loopback adapter. This cause conflict issue when hns get restarted and not able to rehydrate the apipa endpoints. our long-term goal is to make this gw address configurable in dnc. But for a short-term fix, in cns, we want to overwrite the address to 169.254.128.2, so customer can recreate apipa endpoints by restarting the cns.
Issue Fixed:

Requirements:

• uses conventional commit messages
• includes documentation
• adds unit tests
• relevant PR labels added

Notes:

[rbtr]

what's the impact of this change? is it backwards compatible?

[ZetaoZhuang]

here are some screenshots from my set up to test this change

vm ipconfig

container ipconfig

[rbtr]

thanks for adding this context. what happens if this change goes out to a node where containers are already running with the old .1 address?

[ZetaoZhuang]

thanks for adding this context. what happens if this change goes out to a node where containers are already running with the old .1 address?

This change only applies on new created apipa network/endpoints. It does not impact existed containers unless recreate them. @ashvindeodhar

[tamilmani1989]

thanks for adding this context. what happens if this change goes out to a node where containers are already running with the old .1 address?

@ZetaoZhuang did we test this with existing clusters with old cns and new cni, with all combinations?

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