In /logs/firmware/unblob_extracted/firmware_extract/DIR-600_fw_revb5_214b01_ALL_de_20130122/dir600b_v2.14_d1mg.bin_extract/1179788-3612812.squashfs_v4_le_extract/etc/scripts/dns-helper.sh line 3:

xmldbc -P /etc/scripts/libs/dns-helper.php -V ACTION=$1 -V TARGET=$2 -V DNS=$3 > /var/run/dns-helper.sh

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

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

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

Did you mean:

xmldbc -P /etc/scripts/libs/dns-helper.php -V ACTION="$1" -V TARGET="$2" -V DNS="$3" > /var/run/dns-helper.sh

For more information:

  https://www.shellcheck.net/wiki/SC2086 -- Double quote to prevent globbing ...

[*] Source file dns-helper.sh