Sample Linux command lines would be:
<screen>
# iptables -t raw -I OUTPUT -p udp --dport 53 -j NOTRACK
+ # iptables -t raw -I OUTPUT -p udp --sport 53 -j NOTRACK
+ # iptables -t raw -I PREROUTING -p udp --dport 53 -j NOTRACK
# iptables -t raw -I PREROUTING -p udp --sport 53 -j NOTRACK
# iptables -I INPUT -p udp --dport 53 -j ACCEPT
# iptables -I INPUT -p udp --sport 53 -j ACCEPT
# # optionally
# ip6tables -t raw -I OUTPUT -p udp --dport 53 -j NOTRACK
+ # ip6tables -t raw -I OUTPUT -p udp --sport 53 -j NOTRACK
# ip6tables -t raw -I PREROUTING -p udp --sport 53 -j NOTRACK
+ # ip6tables -t raw -I PREROUTING -p udp --dport 53 -j NOTRACK
# ip6tables -I INPUT -p udp --dport 53 -j ACCEPT
# ip6tables -I INPUT -p udp --sport 53 -j ACCEPT
# ip6tables -I OUTPUT -p udp --dport 53 -j ACCEPT