Errors after deleting a gateway

[teon]

Description

After deleting gateway from core the following errors occur on gateway:

defguard-gateway-1  | 2026-03-16T15:57:21.287500Z ERROR handle_updates: defguard_gateway::gateway: message=Failed to update network configuration: WireGuard error WireGuard key error log.target=defguard_gateway::gateway log.module_path=defguard_gateway::gateway log.file=src/gateway.rs log.line=463 [2.0.0 Debian 13.0.0 x86_64]
defguard-gateway-1  | 2026-03-16T15:57:21.287554Z  INFO purge: defguard_gateway::gateway: message=Removed gRPC key at /etc/defguard/certs/gateway_grpc_cert.pem log.target=defguard_gateway::gateway log.module_path=defguard_gateway::gateway log.file=src/gateway.rs log.line=802
defguard-gateway-1  | 2026-03-16T15:57:21.330306Z ERROR purge: defguard_gateway::gateway: message=Gateway purge failed to drop the interface: Command execution failed log.target=defguard_gateway::gateway log.module_path=defguard_gateway::gateway log.file=src/gateway.rs log.line=190 [2.0.0 Debian 13.0.0 x86_64]