To capture all traffic from a specific IP address using tcpdump, the correct syntax is:
bash
tcpdump host 10.0.6.5
* host is the correct keyword used to filter packets from or to a specific IP address.
* ip, addr, and net are not valid or appropriate filters in this context:
* ip is a protocol filter, not an address filter.
* net would filter an entire subnet, not a single host.
* addr is invalid syntax for tcpdump.
As described in CompTIA Linux+ XK0-005 Official Study Guide, Domain 2.0 (Networking Tools):
"The tcpdump utility can be used to capture and analyze packets. Use the keyword host to filter traffic to or from a specific IP address."