four2six(8) IPv6 four2six(8) NAME four2six SYNOPSIS four2six [-FHD] [-m srcmac] [-s src6] [-p srcport] interface ipv6-to- ipv4-gateway ipv4-src ipv4-dst [port] OPTIONS -F insert atomic fragment header (can be set multiple times) -H insert and empty hop-by-hop header -D insert a large destination header that fragments the packet -p srcport set a specific UDP source port or Ping ID -s src6 set a specific IPv6 source address -m srcmac set a specific MAC source address Send an IPv4 packet to an IPv6 4to6 gateway. If a port is specified, a UDP packet is sent, otherwise an ICMPv4 ping. AUTHOR thc-ipv6 was written by van Hauser / THC The homepage for this toolkit is: https://github.com/vanhauser-thc/thc- ipv6 COPYRIGHT four2six 3.8 (c) 2020 by van Hauser / THC www.github.com/vanhauser-thc/thc-ipv6 THC 2022-11-01 four2six(8)