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tailscale/wgengine/router
Irbe Krumina 9bd158cc09
cmd/containerboot,util/linuxfw: create a SNAT rule for dst/src only once, clean up if needed (#13658)
The AddSNATRuleForDst rule was adding a new rule each time it was called including:
- if a rule already existed
- if a rule matching the destination, but with different desired source already existed

This was causing issues especially for the in-progress egress HA proxies work,
where the rules are now refreshed more frequently, so more redundant rules
were being created.

This change:
- only creates the rule if it doesn't already exist
- if a rule for the same dst, but different source is found, delete it
- also ensures that egress proxies refresh firewall rules
if the node's tailnet IP changes

Updates tailscale/tailscale#13406

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
2 months ago
..
callback.go
consolidating_router.go
consolidating_router_test.go
ifconfig_windows.go
ifconfig_windows_test.go
router.go
router_darwin.go
router_default.go
router_fake.go
router_freebsd.go
router_linux.go
router_linux_test.go
router_openbsd.go
router_test.go
router_userspace_bsd.go
router_windows.go
router_windows_test.go
runner.go