r0 = socket$inet6_udplite(0xa, 0x2, 0x88)
ioctl$sock_ipv6_tunnel_SIOCADDTUNNEL(r0, 0x89f1, &(0x7f0000002f80)={'sit0\x00', &(0x7f0000002f00)={'ip6tnl0\x00', 0x0, 0x0, 0x0, 0x3, 0x0, 0x0, @local, @loopback}})