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proxy: opt-out from SNAT for L7 + Tunnel for some scenarios #29594

Merged
merged 2 commits into from
Dec 14, 2023
Merged

proxy: opt-out from SNAT for L7 + Tunnel for some scenarios #29594

merged 2 commits into from
Dec 14, 2023

Commits on Dec 12, 2023

  1. proxy: opt-out from SNAT for L7 + Tunnel for some scenarios 

    Currently the L7 proxy performs SNAT for traffic when tunnel routing is
enabled, even for cluster-internal traffic. This prevents cilium_host from
detecting pod-level traffic, and we thus can't apply features.

Modify SupportsOriginalSourceAddr(), so that the proxy doesn't SNAT such
traffic when some conditions are met.

Signed-off-by: Zhichuan Liang <gray.liang@isovalent.com>
    @jschwinger233
    jschwinger233 committed Dec 12, 2023
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Commits on Dec 13, 2023

  1. iptables: filter table accepts from-proxy packets 

    GKE has DROP policy for filter table, so we have to explicitly accept
proxy traffic.

Signed-off-by: Zhichuan Liang <gray.liang@isovalent.com>
    @jschwinger233
    jschwinger233 committed Dec 13, 2023
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