tcpdump version 4.99.7 libpcap version 1.11.0 (64-bit time_t, with TPACKET_V3) OpenSSL 4.0.3 29 Sep 2026 64-bit build, 64-bit time_t Usage: tcpdump [-AbdDefghHIJKlLnNOpqStuUvxX#] [ -B size ] [ -c count ] [--count] [ -C file_size ] [ -E algo:secret ] [ -F file ] [ -G seconds ] [ -i interface ] [ --immediate-mode ] [ -j tstamptype ] [ --list-remote-interfaces remote-source ] [ -M secret ] [ --number ] [ --print ] [ -Q in|out|inout ] [ -r file ] [ -s snaplen ] [ -T type ] [ --version ] [ -V file ] [ -w file ] [ -W filecount ] [ -y datalinktype ] [ --time-stamp-precision precision ] [ --micro ] [ --nano ] [ -z postrotate-command ] [ -Z user ] [ expression ]