:no-libpcap: 

// tag::deb[]
["source","sh",subs="attributes"]
------------------------------------------------
sudo apt-get install libpcap{libpcap}
------------------------------------------------
// end::deb[]

// tag::rpm[]
["source","sh",subs="attributes"]
------------------------------------------------
sudo yum install libpcap
------------------------------------------------
// end::rpm[]

// tag::mac[]
You probably do not need to install libpcap.
// end::mac[]

// tag::brew[]
You probably do not need to install libpcap.
// end::brew[]

// tag::linux[]
You probably do not need to install libpcap.
// end::linux[]

// tag::win[]
Download and install a packet sniffing library,
such as https://nmap.org/npcap/[Npcap], that implements the
https://github.com/the-tcpdump-group/libpcap[libpcap] interfaces.

If you use Npcap, make sure you install it in WinPcap API-compatible mode. If
you plan to capture traffic from the loopback device (127.0.0.1 traffic), also
select the option to support loopback traffic. 
// end::win[]
