In /logs/firmware/unblob_extracted/firmware_extract/4325012-58052244.squashfs_v4_le_extract/usr/libexec/iptables line 3:

. /lib/rcscripts/sh/error.sh

  ^------------------------^ SC1091 (info): Not following: /lib/rcscripts/sh/error.sh was not specified as input (see shellcheck -x).

In /logs/firmware/unblob_extracted/firmware_extract/4325012-58052244.squashfs_v4_le_extract/usr/libexec/iptables line 4:

. /etc/conf.d/iptables || error "Failed to source config file"

  ^------------------^ SC1091 (info): Not following: /etc/conf.d/iptables was not specified as input (see shellcheck -x).

In /logs/firmware/unblob_extracted/firmware_extract/4325012-58052244.squashfs_v4_le_extract/usr/libexec/iptables line 16:

	:

        ^-- SC2317 (info): Command appears to be unreachable. Check usage (or ignore if invoked indirectly).

In /logs/firmware/unblob_extracted/firmware_extract/4325012-58052244.squashfs_v4_le_extract/usr/libexec/iptables line 26:

	error "Failed to $@"

                         ^-- SC2145 (error): Argument mixes string and array. Use * or separate argument.

In /logs/firmware/unblob_extracted/firmware_extract/4325012-58052244.squashfs_v4_le_extract/usr/libexec/iptables line 35:

	$IPTABLES -P INPUT $1 || fail "set $1 policy!"

                           ^-- SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 

	$IPTABLES -P INPUT "$1" || fail "set $1 policy!"

In /logs/firmware/unblob_extracted/firmware_extract/4325012-58052244.squashfs_v4_le_extract/usr/libexec/iptables line 36:

	$IP6TABLES -P INPUT $1 || fail "set $1 policy!"

                            ^-- SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 

	$IP6TABLES -P INPUT "$1" || fail "set $1 policy!"

In /logs/firmware/unblob_extracted/firmware_extract/4325012-58052244.squashfs_v4_le_extract/usr/libexec/iptables line 40:

	local family

        ^----------^ SC3043 (warning): In POSIX sh, 'local' is undefined.

In /logs/firmware/unblob_extracted/firmware_extract/4325012-58052244.squashfs_v4_le_extract/usr/libexec/iptables line 45:

		*[!.:[:xdigit:][:blank:]\/,]*)

                                        ^-- SC1001 (info): This \/ will be a regular '/' in this context.

In /logs/firmware/unblob_extracted/firmware_extract/4325012-58052244.squashfs_v4_le_extract/usr/libexec/iptables line 52:

			family=4

                        ^----^ SC2034 (warning): family appears unused. Verify use (or export if used externally).

In /logs/firmware/unblob_extracted/firmware_extract/4325012-58052244.squashfs_v4_le_extract/usr/libexec/iptables line 58:

	eval $2=\$family || error "Failed to evaluate IP address family"

             ^-- SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 

	eval "$2"=\$family || error "Failed to evaluate IP address family"

In /logs/firmware/unblob_extracted/firmware_extract/4325012-58052244.squashfs_v4_le_extract/usr/libexec/iptables line 62:

	local added_iptables=0 added_ip6tables=0 af=0

        ^-- SC3043 (warning): In POSIX sh, 'local' is undefined.

For more information:

  https://www.shellcheck.net/wiki/SC2145 -- Argument mixes string and array. ...

  https://www.shellcheck.net/wiki/SC2034 -- family appears unused. Verify use...

  https://www.shellcheck.net/wiki/SC3043 -- In POSIX sh, 'local' is undefined.