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Ward Vandewege wrote: > These work fine for me (I use djbdns/dnscache). > > Try this first > > dig www.edmunds.com @216.255.129.249 > dig www.edmunds.com @216.255.130.249 > > dig www.inifiniti.com @129.33.82.4 > dig www.inifiniti.com @129.33.82.5 > > If that does not work, you can't talk to the respective nameservers for the > domain. > > If so, maybe you have ECN (Explicit Congestion Notification) enabled in your > kernel? If those two hosts (or, actually, the nameserver(s)) for the domains > are on a network/device that chokes on ECN, you might find their nameserver > unreachable from your box. > > cat /proc/sys/net/ipv4/tcp_ecn > > Returns 0 if disabled, or 1 if it is enabled. If it's 1, try > > echo 0 >/proc/sys/net/ipv4/tcp_ecn > > and then try > > dig www.edmunds.com @216.255.129.249 > dig www.edmunds.com @216.255.130.249 > > dig www.inifiniti.com @129.33.82.4 > dig www.inifiniti.com @129.33.82.5 > > to see if that fixed it... > > Note that having ECN on is NOT wrong; in fact it's good for your network - > smarter congestion control. But sadly there are still broken routers/hosts > out there that can't cope with it... > I don't have ECN enabled. When I run those dig commands, I get a status of "REFUSED" back. # dig www.edmunds.com @216.255.129.249 ; <<>> DiG 9.1.3 <<>> www.edmunds.com @216.255.129.249 ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: REFUSED, id: 41115 ;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;www.edmunds.com. IN A ;; Query time: 28 msec ;; SERVER: 216.255.129.249#53(216.255.129.249) ;; WHEN: Sat Jan 14 23:55:33 2006 ;; MSG SIZE rcvd: 33
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