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[client] Fix legacy routes when connecting to management servers older than v0.30.0 (#3854)

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This commit is contained in:
Viktor Liu
2025-05-21 13:48:55 +02:00
committed by GitHub
parent daa8380df9
commit e806d9de38
2 changed files with 8 additions and 6 deletions
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8
client/internal/engine.go
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@ -978,6 +978,14 @@ func (e *Engine) updateNetworkMap(networkMap *mgmProto.NetworkMap) error {
log.Errorf("failed to update local IPs: %v", err)
}
}
// If we got empty rules list but management did not set the networkMap.FirewallRulesIsEmpty flag,
// then the mgmt server is older than the client, and we need to allow all traffic for routes.
// This needs to be toggled before applying routes.
isLegacy := len(networkMap.RoutesFirewallRules) == 0 && !networkMap.RoutesFirewallRulesIsEmpty
if err := e.firewall.SetLegacyManagement(isLegacy); err != nil {
log.Errorf("failed to set legacy management flag: %v", err)
}
}
dnsRouteFeatureFlag := toDNSFeatureFlag(networkMap)