Teredo is intended to be a temporary measure: in the long term, all IPv6 hosts should use native IPv6 connectivity. In effect, a host implementing Teredo can gain IPv6 connectivity with no cooperation from the local network environment. Thus, IPv6-aware hosts behind NATs can be used as Teredo tunnel endpoints even when they don't have a dedicated public IPv4 address. Teredo alleviates this problem by encapsulating IPv6 packets within UDP/IPv4 datagrams, which most NATs can forward properly. Many NAT devices currently deployed, however, cannot be upgraded to implement 6to4, for technical or economic reasons. In such a situation, the only available public IPv4 address is assigned to the NAT device, and the 6to4 tunnel endpoint needs to be implemented on the NAT device itself. However, many hosts are currently attached to the IPv4 Internet through one or several NAT devices, usually because of IPv4 address shortage. I did not even know it was there!Ħto4, the most common IPv6 over IPv4 tunneling protocol, requires the tunnel endpoint to have a public IPv4 address. This TOREDO TUNNEL thing I have on ONE of my PC's. The world has run out of IPV4 and the Gurus are implementing IPV6. Okay: Google IPV6 if you haven't already. I hope it's not big brother or ? Vipre should nail them I would think. This is the main desktop PC, my laptops just show the usual IPV4 addressing. If any of Y'all know anything about the "scheme" let me know. I'm also wondering if anyone out there have had to deal with the IPV6 for Industrial Networking? Has AB or ROCKWELL gotten into that, or is everyone still using IPV4 addressing? perhaps these are all addresses on the local network, not on the Internet. I also typed one of the IPV6 addresses from my PC into Visual IP Trace on another computer and the searches ping off of itself. I copied and pasted them each into my Visual IP Trace application I use for tracking hackers and they all show my computer. ![]() But this computer also has 5 IPV6 Addresses: Here is a copy paste: (I changed some numbers for privacy) What I can't figure out is why my computer has 6 IP ADDRESSES: The usual IPV4 Gateway from the Comcast router, and the DHCP address given by the router, and the usual MAC address. Well I found this link: which explains it a bit. ![]() Earlier, for other reasons, I did an "IPCONFIG /ALL" command at my DOS prompt and saw what I have seen dozens of times when all at I once I said, "What?!" I did not make sense of the addresses. What? I know it's "been out there" but honestly i haven't paid a whole lot of attention to it. Wireshark recognizes this directly from the file the '.gz' extension is not required for this purpose.IPV4 and IPV6. Wireshark is also capable of reading any of these file formats if they are compressed using gzip. There is no need to tell Wireshark what type of file you are reading it will determine the file type by itself. Linux Bluez Bluetooth stack hcidump -w traces Endace Measurement Systems' ERF format captures the output from Accellent's 5Views LAN agents Visual Networks' Visual UpTime traffic capture the text output from the DBS Etherwatch VMS utility the output from VMS's TCPIPtrace/TCPtrace/UCX$TRACE utilities the output in IPLog format from the Cisco Secure Intrusion Detection System the output from i4btrace from the ISDN4BSD project Network Instruments Observer version 9 captures ![]() AG Group/WildPackets/Savvius EtherPeek/TokenPeek/AiroPeek/EtherHelp/PacketGrabber captures Network General/Network Associates DOS-based Sniffer (compressed or uncompressed) captures Network Associates Windows-based Sniffer captures libpcap/WinPcap, tcpdump and various other tools using tcpdump's capture format So Wireshark can read capture files from: Wireshark's native capture file format is libpcap format, which is also the format used by tcpdump and various other tools. It lets you interactively browse packet data from a live network or from a previously saved capture file. Wireshark is a GUI network protocol analyzer.
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