Ich bin's, Kai die Katze!
ping -6 ff02::1%eth0
# iptables -L | grep Chain
# iptables -n -L INPUT
or
# iptables -S INPUT
# iptables -n -v --line-numbers -L FORWARD
# iptables -Z INPUT 42
# iptables -F OUTPUT
# nft list ruleset
ssh -NfL 8080:localhost:1337 user@host.tld
ssh user@host sudo tcpdump -i wlan0 -w - | wireshark -k -i -