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Flush old iptables rules before testing new ones #414

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Merged
selzoc merged 1 commit into from
Feb 26, 2026
Merged

Flush old iptables rules before testing new ones #414

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7 changes: 7 additions & 0 deletions integration/nats_firewall_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,13 @@ var _ = Describe("nats firewall", func() {
// restore original settings of bosh from initial deploy of this VM.
_, err := testEnvironment.RunCommand("sudo cp /settings-backup/*.json /var/vcap/bosh/")
Expect(err).ToNot(HaveOccurred())

// Flush legacy iptables mangle rules left over from the initial agent deploy.
// The old agent used iptables cgroup-based rules in the mangle table; these
// conflict with the new nftables UID-based firewall and would drop traffic
// that doesn't match the old cgroup.
_, _ = testEnvironment.RunCommand("sudo iptables -t mangle -F") //nolint:errcheck
_, _ = testEnvironment.RunCommand("sudo ip6tables -t mangle -F") //nolint:errcheck
})

It("sets up the outgoing nats firewall", func() {
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