however, When I build with INSTALL_DEBUG_TOOLS=y.
The following appears at the end of log file.
WARNING: Image format was not specified for './sonic-installer.img' and probing guessed raw.
8446 Automatically detecting the format is dangerous for raw images, write operations on block 0 will be restricted.
8447 Specify the 'raw' format explicitly to remove the restrictions.
8448 qemu-system-x86_64: -serial telnet:
127.0.0.1:9000,server: info: QEMU waiting for connection on: disconnected:telnet:
127.0.0.1:9000,server
8449 qemu-system-x86_64: external icmpv6 not supported yet
8450 qemu-system-x86_64: external icmpv6 not supported yet
8451 qemu-system-x86_64: external icmpv6 not supported yet
8452 qemu-system-x86_64: external icmpv6 not supported yet
8453 qemu-system-x86_64: external icmpv6 not supported yet
8454 qemu-system-x86_64: external icmpv6 not supported yet
8455 qemu-system-x86_64: external icmpv6 not supported yet
8456 qemu-system-x86_64: external icmpv6 not supported yet