DHCP_SUPPORT_V4   592 src/network/networkd-dhcp4.c         assert(IN_SET(link->network->dhcp, DHCP_SUPPORT_BOTH, DHCP_SUPPORT_V4));
DHCP_SUPPORT_V4    55 src/network/networkd-link.c         return IN_SET(link->network->dhcp, DHCP_SUPPORT_V4, DHCP_SUPPORT_BOTH);
DHCP_SUPPORT_V4   440 src/network/networkd-network.c         [DHCP_SUPPORT_V4] = "v4",