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Why Is a Cadant router showing up on Wireshark

asked 2022-03-31 07:17:24 +0000

Vtechie gravatar image

updated 2022-03-31 08:03:11 +0000

grahamb gravatar image

My ISP's Modem Online light was going off and then back on. This has happened many times and I've had my ISP tech to check and check the connections. This is not the problem. I connected my computer to the Hitron Modem's of ISP's and I got a Cadant Router, not Hitron Modem. The Mac Address of the Hitron Modem is not the same as the Cadant.

 [Protocols in frame: eth:ethertype:ip:udp:dhcp]
    [Coloring Rule Name: UDP]
    [Coloring Rule String: udp]
Ethernet II, Src: **Cadant_X'X:XX:XX** (00:01:XX:XX:XX:XX), Dst: Broadcast (ff:ff:ff:ff:ff:ff)
    Destination: Broadcast (ff:ff:ff:ff:ff:ff)
        <[Destination (resolved): Broadcast]>
        <[Destination OUI: ff:ff:ff]>
        Address: Broadcast (ff:ff:ff:ff:ff:ff)
        <[Address (resolved): Broadcast]>
        <[Address OUI: ff:ff:ff]>
        .... ..1. .... .... .... .... = LG bit: Locally administered address (this is NOT the factory default)
        <.... ..1. .... .... .... .... = LG bit: Locally administered address (this is NOT the factory default)>
        .... ...1 .... .... .... .... = IG bit: Group address (multicast/broadcast)
        <.... ...1 .... .... .... .... = IG bit: Group address (multicast/broadcast)> 

   Type: IPv4 (0x0800)
Internet Protocol Version 4, Src: XX.XXX.XXX.1 (XX.XXX.XXX.1), Dst: 255.255.255.255 (255.255.255.255)

Then Router Advertisement on other frames

Ethernet II, Src: **Cadant_XX:XX:X**X (00:01:5c:XX:XX:XX), Dst: IPv6mcast_01 (33:33:00:00:00:01)
    Destination: IPv6mcast_01 (33:33:00:00:00:01)
        <[Destination (resolved): IPv6mcast_01]>
        <[Destination OUI: 33:33:00]>
        Address: IPv6mcast_01 (33:33:00:00:00:01)
        <[Address (resolved): IPv6mcast_01]>
        <[Address OUI: 33:33:00]>
        .... ..1. .... .... .... .... = LG bit: Locally administered address (this is NOT the factory default)
        <.... ..1. .... .... .... .... = LG bit: Locally administered address (this is NOT the factory default)>
        .... ...1 .... .... .... .... = IG bit: Group address (multicast/broadcast)
        <.... ...1 .... .... .... .... = IG bit: Group address (multicast/broadcast)>
    Source: Src: Cadant_XX:XX:XX (00:01:5c:XX:XX:XX)
        <[Source (resolved): Src: Cadant_XX:XX:XX]> etc. 
                .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
        <.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)>
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
        <.... ...0 .... .... .... .... = IG bit: Individual address (unicast)>
    Type: IPv6 (0x86dd)
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answered 2022-03-31 09:16:22 +0000

grahamb gravatar image

Wireshark displays the source MAC address as a Cadant one as that's who the OUI is registered to by the IEEE. See the IEEE registry for confirmation.

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I agree, I understand. I have a Hitron Modem with a different Mac Address on the bottom service tag. There are some pictures of what I am talking about in the this link. https://drive.google.com/drive/folder...

Thank you

Vtechie gravatar imageVtechie ( 2022-04-02 06:35:03 +0000 )edit

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Asked: 2022-03-31 07:17:24 +0000

Seen: 47 times

Last updated: Mar 31