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Add env var to force userspace routing if native routing is available

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This commit is contained in:
Viktor Liu 2025-01-03 17:59:13 +01:00
parent 0b116b3941
commit eaadb75144
1 changed files with 9 additions and 0 deletions
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9
client/firewall/uspfilter/uspfilter.go
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@ -35,6 +35,9 @@ const (
// This is useful when routing/firewall setup is done manually instead of by netbird.
// This setting always disables userspace routing and filtering of routed traffic.
EnvForceNativeRouter = "NB_FORCE_NATIVE_ROUTER"
// EnvForceUserspaceRouter forces userspace routing even if native routing is available.
EnvForceUserspaceRouter = "NB_FORCE_USERSPACE_ROUTER"
)
// RuleSet is a set of rules grouped by a string key
@ -96,7 +99,13 @@ func CreateWithNativeFirewall(iface common.IFaceMapper, nativeFirewall firewall.
mgr.nativeFirewall = nativeFirewall
if forceUserspaceRouter, _ := strconv.ParseBool(os.Getenv(EnvForceUserspaceRouter)); forceUserspaceRouter {
log.Info("userspace routing is forced")
return mgr, nil
}
forceNativeRouter, _ := strconv.ParseBool(EnvForceNativeRouter)
// if the OS supports routing natively, or it is explicitly requested, then we don't need to filter/route ourselves
if mgr.nativeFirewall != nil && mgr.nativeFirewall.IsServerRouteSupported() || forceNativeRouter {
mgr.nativeRouter = true