@bmeeks I solved it by copying both the curl and sh binaries into the chrooted folder and specifying the path to them directly: mkdir -p /var/dhcpd/bin mkdir -p /var/dhcpd/usr/local/bin cp /bin/bash /var/dhcpd/bin/ cp /usr/local/bin/curl /var/dhcpd/usr/local/bin/ Then in my /var/dhcpd/etc/dhcp_update.sh script: #!/bin/sh BASE_URL="http://your-web-server.com/your-endpoint" EVENT_TYPE="$1" IP_ADDRESS="$2" MAC_ADDRESS="$3" case "$EVENT_TYPE" in "1") ONLINE_STATE="online" ;; "2"|"3") ONLINE_STATE="offline" ;; *) ONLINE_STATE="unknown" ;; esac URL="${BASE_URL}?ip=${IP_ADDRESS}&mac=${MAC_ADDRESS}&state=${ONLINE_STATE}&event=${EVENT_TYPE}" echo "DHCP Announce: $URL" /usr/local/bin/curl -X GET "$URL" It aborted with exit code 6, which means that cURL couldn't resolve the hostname (good news!). I still haven't tested this with my proper endpoint, but I think it will work now.