CONFIG_NETWORKING=y CONFIG_NET_SOCKETS=y CONFIG_NET_TCP=y CONFIG_NET_LOG=y CONFIG_NET_IPV6_RA_RDNSS=y CONFIG_NET_IF_UNICAST_IPV6_ADDR_COUNT=3 CONFIG_NET_IF_MCAST_IPV6_ADDR_COUNT=2 CONFIG_PRINTK=y CONFIG_STDOUT_CONSOLE=y # Enable IPv6 support CONFIG_NET_IPV6=n # Enable IPv4 support CONFIG_NET_IPV4=y # Enable the MQTT Lib CONFIG_MQTT_LIB=y CONFIG_NET_CONFIG_SETTINGS=y CONFIG_NET_CONFIG_MY_IPV6_ADDR="2001:db8::1" CONFIG_NET_CONFIG_PEER_IPV6_ADDR="2001:db8::2" CONFIG_NET_CONFIG_MY_IPV4_ADDR="192.0.2.1" CONFIG_NET_CONFIG_PEER_IPV4_ADDR="192.0.2.2" CONFIG_MAIN_STACK_SIZE=2048 # For IPv6 CONFIG_NET_BUF_DATA_SIZE=256