Viktor Liu 4fc910031b Check chain existence before deleting NAT OUTPUT jump rule ...

The cleanup path tried to delete the jump rule to NETBIRD-NAT-OUTPUT
unconditionally, producing a noisy debug log when the chain was never
created (common for the v6 router when no OutputDNAT rules exist).
Check ChainExists first, consistent with the chain deletion loop
below.

2026-04-10 13:21:05 +02:00

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