DHCP_DEFAULT_MIN_SIZE   64 src/libsystemd-network/dhcp-protocol.h #define DHCP_MIN_OPTIONS_SIZE   DHCP_DEFAULT_MIN_SIZE - DHCP_IP_UDP_SIZE - DHCP_MESSAGE_SIZE
DHCP_DEFAULT_MIN_SIZE  252 src/libsystemd-network/sd-dhcp-client.c         assert_return(mtu >= DHCP_DEFAULT_MIN_SIZE, -ERANGE);
DHCP_DEFAULT_MIN_SIZE 1606 src/libsystemd-network/sd-dhcp-client.c         client->mtu = DHCP_DEFAULT_MIN_SIZE;