On 24/03/2021 05:32, Charlie Gibbs wrote: > I read Usenet (including this mailing list via the newsgroup > linux.debian.user) on my laptop. so I can keep up from anywhere. > It works well, but at home it takes 20 or 30 seconds to connect > to my NNTP server, newsguy.com. If I take my laptop to the office > and run slrnpull there, it connects instantly. I've mentioned this > to people in the past, and the consensus seems to be that it's some > sort of DNS problem. > > My laptop is running NetworkManager. When I wake it up at > a new location, resolv.conf (which is actually a link to > /run/NetworkManager/resolv.conf) gets overwritten with > information that works where I now am. At the office, > it's simply: > > # Generated by NetworkManager > nameserver 192.168.1.5 > nameserver 192.168.1.1 > > while at home it becomes more intricate: > > # Generated by NetworkManager > search telus > nameserver 192.168.0.1 > nameserver 75.153.171.122 > nameserver 2001:568:ff09:10a::56 > # NOTE: the libc resolver may not support more than 3 nameservers. > # The nameservers listed below may not be recognized. > nameserver 2001:568:ff09:10b::122 > > My home router (supplied by Telus, notice the "search" line)
Just another point to add to what other people are saying. This line looks a bit suspicious to me. The "search" line is _supposed_ to be a list of domains which your computer is part of. It's implemented such that, when the resolver is asked to look up a short name (e.g. "printer" or "my-laptop" etc), then each item in the search list will be appended in turn and a lookup made. So, for example you could have "search example.com example.net" and a lookup for "gateway" would try "gateway.example.com" then "gateway.example.net" in turn. According to IANA, who keep the register of top level domains at https://www.iana.org/domains/root/db, there is no such domain called "telus", so one would expect a lookup for "gateway.telus" to fail (unless it's a private domain, only hosted on the telus DNS servers. That's perfectly possible). > shows two DNS addresses - 75.153.176.1 and 75.153.171.122 - > on its configuration screen. The second address (but not the > first) winds up in resolv.conf. The router is at 192.168.0.1. > Dunno about those IPv6 addresses; I've made no conscious effort > to use IPv6 anywhere. Do you have an IPv6 address? If you run "ip -c -6 a", do you have an address with "scope global"? You may have one with "scope link", but that won't help at the moment. If you do, then congratulations: Telus have provided you with a connection to the modern internet. If not, then you won't be able to reach these resolver addresses. > > I suspect there's something fishy about that home resolv.conf; > can one of you gurus suggest what it might be? >
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