Anssi Hannula
223932c786
The dhcp4 code sets link->dhcp4_configured when dhcp4_route_handler() has processed the last message. However, in case UseRoutes=no has been set in the [DHCP] section, or in case the DHCP server simply sends no routes, link_set_dhcp_routes() will not send any netlink messages and dhcp4_route_handler() will therefore never be called. This causes the link to never reach LINK_STATE_CONFIGURED, and e.g. systemd-networkd-wait-online will not consider the link as ready. Fix that by setting link->dhcp4_configured = true and calling link_check_ready() in dhcp4_address_handler() in case link_set_dhcp_routes() sent no netlink messages (dhcp4_messages is zero).
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