Use an Ethernet (UTP) cable to connect a Wireshark-equipped computer (laptop) to the hub. Note: The printer may be offline for a few minutes until it reconnects (re-routes) its network connection. Use an Ethernet (UTP) cable to connect the printer or printers that are to be tested to the hub. Note: There is no need to disconnect the AS/400 from the network during this setup.Ĭonnect the network hub to the same network as the AS/400 server. I'm totally confused.PC hosting 'Wireshark' application directly connected to hubĪS400 or mainframe make sure to connect the hub to the some WAN/LAN connection where the AS400 server resides. How should I fix this? It seems my DNS is totally broken. And if that's not bad enough, I've had to reset my router twice in last week (OpenWRT) because sometimes DNS would break altogether, and Wireshark would show that my local domain, '.lann' was being added to every single query the system made, for example: Is this normal? Is dnsmasq interfering with DNSCrypt-proxy? I tried running dnscrypt without a dns cache, but than I noticed that queries to my localhost and sometimes local network were being forwarded to the nameservers. It even happens for broadcast addresses: 125 37.371037000 localhost localhost DNS 90 Standard query 0x8e53 PTR Įverytime this happens, the queries are followed by a bunch of 'conntecion resets' and other warnings.

13.0.8.10.in-addr.arpa.13.0.8.10.in-addr.arpa.Īnd let's say my VPN server IP is 123.456.78.91, than the queries look like this: 9143 584.912799000 localhost localhost DNS 88 Standard query 0xc198 PTR 19.78.Īnd of course, the answer to these queries are always this: 9144 584.912945000 localhost localhost DNS 88 Standard query response 0xc198 No such name Firstly, after disconnecting from my VPN, with the hypothetical IP address of 10.8.0.13, I see this.

When running a dumcap via Wireshark, I've noticed a couple of odd occurrences lately.

I have been using DNSCrypt with dnsmasq on my Ubuntu 14.10 machine.

Wireshark ip address