We have a customer planning to enable IPV6 firewalling in their current data center firewalls. The firewalls are currently running in active-active HA mode. I have the below queries.
1. When I configure IPV6 address on the interfaces, is there any possibility that the HA will break or it will have flaps?.
2. When I configure floating IPV6 addresses on the firewalls, is there any possibility that the HA will break or it will have flaps?.
3. Is it mandatory to configure IPV6 addresses on the HA interfaces (like HA1,HA2 and HA3) ?
Thank you for posting questions @shabeeb
We have enabled IPv6 in a few Data Centers and Firewalls are running dual stack. During actual configuration as well as post operation we did not come across any flapping or anything similar related to HA.
1. I did not come across this issue and I believe enabling IPv6 on interface is safe and will not cause HA issue.
2. This operation should not cause an issue.
3. It is not mandatory to enabled IPv6 on HA interfaces. Your customer can keep using existing IPv4 HA configuration.
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