host: fix gateway peers getting allowed IPs of unrelated hostsHEADmaster

When the local node is a gateway for a peer, network_host_uses_peer_route()
incorrectly added all other hosts' IPs to that peer's allowed IPs. This
caused WireGuard to steal IP assignments from other peers, leaving them
with no allowed IPs and breaking routing.

The faulty condition checked if the peer uses the local host as its gateway
and if so, routed all other hosts through that peer. This is wrong: a peer
using us as a gateway should only have its own IPs in its allowed IPs, not
every other host's.

Signed-off-by: Felix Fietkau <nbd@nbd.name>

1 files changed, 0 insertions, 4 deletions

diff --git a/host.h b/host.h
index afe2d72..52ce36d 100644
--- a/host.h
+++ b/host.h
@@ -109,10 +109,6 @@ network_host_uses_peer_route(struct network_host *host, struct network *net,
 	    !strcmp(net->net_config.local_host->gateway, network_peer_name(peer)))
 		return true;
 
-	if (peer_host->gateway &&
-	    !strcmp(peer_host->gateway, network_host_name(net->net_config.local_host)))
-		return true;
-
 	if (!host->gateway)
 		return false;