Update nftables kube-proxy docs for 1.31 beta

[danwinship]

@aojea @aroradaman Am I forgetting any other iptables→nftables changes that need to be documented?

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[dipesh-rawat]

/sig network

[aroradaman]

I noticed multiple command line flags in the content but shouldn't we encourage users to use v1alpha1 config instead of command line flags (given config precede flag)?

Maybe we can include the min-supported kernel version as well?

Otherwise LGTM.

[danwinship]

shouldn't we encourage users to use v1alpha1 config instead of command line flags (given config precede flag)

I think we're currently inconsistent about that, but generally, given that the config is alpha and the CLI is not, I think the command line flags are preferred for documentation? I'm not really sure though...

Maybe we can include the min-supported kernel version as well?

Yes, good point, though that hasn't actually merged yet.

[aojea]

given that the config is alpha

the config is alpha in name but any incompatible change there will break a lot of clients

Nice write up

/lgtm

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: c88b819972556f68d00382b977e0aa3fab8ceb2e

[tengqm]

/approve

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[aroradaman]

/lgtm

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: 4f9c888321c7e19d36dfae5bb0ef87df56c35b2b