Log Message:
Update to dhcpcd-7.0.4 with the following changes:
 * OpenBSD: Fix adding INET6 on-link routes without an address
 * Linux: Improve interface renaming
 * Linux: If listening to dev manager, let it remove interfaces
 * Routing: Fix case when cloning route changes but needs to be replaced
 * DHCP6: Transpose DHCP userclass option into DHCP6
 * DHCP6: Fix sending custom vendor class option
 * Auth: Allow zero value replay detection data
 * Auth: Allow different tokens for send and receive
 * ND6: Warn if router lifetime is set to zero
 * DHCP6: Softwire Address and Port-Mapped Clients, RFC7598