root@armadillo:/etc/apt# apt-get install bluez-hcidump
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following NEW packages will be installed:
  bluez-hcidump
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 167 kB of archives.
After this operation, 376 kB of additional disk space will be used.
Err:1 http://security.debian.org stretch/updates/main armhf bluez-hcidump armhf 5.43-2+deb9u3
  404  Not Found [IP: 151.101.110.132 80]
E: Failed to fetch http://security.debian.org/pool/updates/main/b/bluez/bluez-hcidump_5.43-2+deb9u3_armhf.deb  404  Not Found [IP: 151.101.110.132 80]
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?