In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/lib/network/config.sh line 4:
. /usr/share/libubox/jshn.sh
  ^------------------------^ SC1091 (info): Not following: /usr/share/libubox/jshn.sh was not specified as input (see shellcheck -x).


In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/lib/network/config.sh line 7:
	local device="$1"
        ^----------^ SC3043 (warning): In POSIX sh, 'local' is undefined.


In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/lib/network/config.sh line 8:
	local ifdev ifl3dev ifobj
        ^-----------------------^ SC3043 (warning): In POSIX sh, 'local' is undefined.


In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/lib/network/config.sh line 9:
	for ifobj in `ubus list network.interface.\*`; do
                     ^-- SC2006 (style): Use $(...) notation instead of legacy backticks `...`.

Did you mean: 
	for ifobj in $(ubus list network.interface.\*); do


In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/lib/network/config.sh line 12:
			json_load "$(ifstatus $interface)"
                                              ^--------^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 
			json_load "$(ifstatus "$interface")"


In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/lib/network/config.sh line 15:
			if [[ "$device" = "$ifdev" ]] || [[ "$device" = "$ifl3dev" ]]; then
                           ^------------------------^ SC3010 (warning): In POSIX sh, [[ ]] is undefined.
                                                         ^--------------------------^ SC3010 (warning): In POSIX sh, [[ ]] is undefined.


In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/lib/network/config.sh line 31:
	local _data="$(ubus -S call "$1" "$2")"
        ^---------^ SC3043 (warning): In POSIX sh, 'local' is undefined.
              ^---^ SC2155 (warning): Declare and assign separately to avoid masking return values.


In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/lib/network/config.sh line 39:
	local config="$1"
        ^----------^ SC3043 (warning): In POSIX sh, 'local' is undefined.


In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/lib/network/config.sh line 40:
	local ifname type device l3dev
        ^----------------------------^ SC3043 (warning): In POSIX sh, 'local' is undefined.


In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/lib/network/config.sh line 58:
	local config="$1"
        ^----------^ SC3043 (warning): In POSIX sh, 'local' is undefined.


In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/lib/network/config.sh line 65:
	local iface="$1"
        ^---------^ SC3043 (warning): In POSIX sh, 'local' is undefined.


In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/lib/network/config.sh line 66:
	local config="$2"
        ^----------^ SC3043 (warning): In POSIX sh, 'local' is undefined.


In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/lib/network/config.sh line 73:
	[ -n "$2" ] && \
                    ^-- SC2015 (info): Note that A && B || C is not if-then-else. C may run when A is true.

For more information:
  https://www.shellcheck.net/wiki/SC2155 -- Declare and assign separately to ...
  https://www.shellcheck.net/wiki/SC3010 -- In POSIX sh, [[ ]] is undefined.
  https://www.shellcheck.net/wiki/SC3043 -- In POSIX sh, 'local' is undefined.