# Enable u-blox SARA-R4 modem CONFIG_MODEM=y CONFIG_MODEM_SHELL=y CONFIG_MODEM_UBLOX_SARA_R4=y CONFIG_UART_INTERRUPT_DRIVEN=y # extend retry timing to 20 seconds for LTE/LTE-M CONFIG_COAP_INIT_ACK_TIMEOUT_MS=20000 # Hack: disable IPv6 for now # CONFIG_NET_IPV6 is not set # CONFIG_NET_CONFIG_NEED_IPV6 is not set