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util/linuxfw, feature/buildfeatures: add ts_omit_iptables to make IPTables optional

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Updates #12614

Change-Id: Ic0eba982aa8468a55c63e1b763345f032a55b4e2
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick
2025-09-26 16:19:12 -07:00
committed by Brad Fitzpatrick
parent 7df7e01d0f
commit dd615c8fdd
18 changed files with 282 additions and 221 deletions
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4
util/linuxfw/nftables.go
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@@ -103,6 +103,10 @@ func DebugNetfilter(logf logger.Logf) error {
return nil
}
func init() {
hookDetectNetfilter.Set(detectNetfilter)
}
// detectNetfilter returns the number of nftables rules present in the system.
func detectNetfilter() (int, error) {
// Frist try creating a dummy postrouting chain. Emperically, we have