Per-socket TCP internals iproute2
Show rtt/cwnd/retrans per socket for 443; pinpoint slow/lossy peers
ss -tip state established '( dport = :443 )'
more iproute2
all 12 commands →
Kill sockets by filter
ss -K dst <ip> dport = :8080
Add secondary IP
ip addr add 10.0.0.5/24 dev <name> && ip addr show dev <name>
Set interface MTU
ip link set dev <name> mtu 9000 && ip link set dev <name> up
JSON addr to jq
ip -j a | jq -r '.[] | select(.operstate=="UP") | .ifname + " " + (.addr_info[]?.local // "-")'
Which route is chosen
ip route get <ip>