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Kernel: Ignore interfaces without an IP address when routing packages

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Let's not route packages through interfaces which don't have an address
yet unless we're explicitly asked to (e.g. by DHCPClient).
This commit is contained in:
Gunnar Beutner 2021-05-21 21:47:26 +02:00 • committed by Andreas Kling
parent eb1cecc03d
commit 7cd49ba2a2
1 changed files with 4 additions and 1 deletions
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5
Kernel/Net/Routing.cpp
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@ -152,7 +152,7 @@ RoutingDecision route_to(const IPv4Address& target, const IPv4Address& source, c
RefPtr<NetworkAdapter> local_adapter = nullptr;
RefPtr<NetworkAdapter> gateway_adapter = nullptr;
NetworkAdapter::for_each([source_addr, &target_addr, &local_adapter, &gateway_adapter, &matches](auto& adapter) {
NetworkAdapter::for_each([source_addr, &target_addr, &local_adapter, &gateway_adapter, &matches, &through](auto& adapter) {
auto adapter_addr = adapter.ipv4_address().to_u32();
auto adapter_mask = adapter.ipv4_netmask().to_u32();
@ -161,6 +161,9 @@ RoutingDecision route_to(const IPv4Address& target, const IPv4Address& source, c
return;
}
if (!adapter.link_up() || (adapter_addr == 0 && !through))
return;
if (source_addr != 0 && source_addr != adapter_addr)
return;