Do you want to continue? [Y/n] y
Get:1
http://archive.ubuntu.com/ubuntu xenial/main amd64 libpcap0.8 amd64 1.7.4-2 [117 kB]
Err:2
http://security.ubuntu.com/ubuntu xenial-security/main amd64 tcpdump amd64 4.9.2-0ubuntu0.16.04.1
404 Not Found [IP: 2001:67c:1360:8001::24 80]
Err:2
http://security.ubuntu.com/ubuntu xenial-security/main amd64 tcpdump amd64 4.9.2-0ubuntu0.16.04.1
404 Not Found [IP: 2001:67c:1360:8001::24 80]
Fetched 117 kB in 0s (190 kB/s)
E: Failed to fetch
http://security.ubuntu.com/ubuntu/pool/main/t/tcpdump/tcpdump_4.9.2-0ubuntu0.16.04.1_amd64.deb 404 Not Found [IP: 2001:67c:1360:8001::24 80]
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?