hexdump isn't working properly on some Big Endian systems, producing incorrect output such as: hexdump -vn 5 -e '"fd" 1/1 "%02x:" 2/2 "%x:"' /dev/urandom fdff:542c0054:17920017: Which should be: fdff:542c:1792: This breaks the default ULA prefix generation on some systems. See: https://github.com/openwrt/openwrt/issues/19844 The issue has already been fixed upstream, so we can backport the fix: https://git.busybox.net/busybox/commit/libbb/dump.c?id=f5c7cae55fc3e19d074198bc12152486067ea8c7 Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>