config ip6ip tunnel over udp

#!/bin/bash

ip fou add port 41966 ipproto 41
ip link add sit01 type sit remote 198.23.236.232 local 172.31.1.30 ttl 64 encap fou encap-sport  41966 encap-dport 5555
ip -6 address add 3ffe:6::1/96 dev sit01
ip -6 route add default dev sit01

sysctl -w net.ipv4.ip_unprivileged_port_start=50
./udp_ixd -x 0 53