ro 

BytesLen (TIdStruct)

echo_id (TIdicmp_hun)

echo_seq (TIdicmp_hun)

frag_mtu (TIdicmp_hun)

frag_pad (TIdicmp_hun)

gateway_s_b1 (TIdicmp_hun)

gateway_s_b2 (TIdicmp_hun)

gateway_s_b3 (TIdicmp_hun)

gateway_s_b4 (TIdicmp_hun)

gateway_s_l (TIdicmp_hun)

gateway_s_w1 (TIdicmp_hun)

gateway_s_w2 (TIdicmp_hun)