Brian May wrote:
Hello,
If I try to resolve oss.trac.sara.nl from work (aarnet), it works. If I try to resolve it from home (internode) it doesn't work.
OK, step #1 is use dig, not host. $ dig oss.trac.sara.nl +short $ ...doesn't resolve for me behind internode, so great, I can reproduce the issue. Let's see if the problem is internode, or upstream: $ dig oss.trac.sara.nl +short @8.8.8.8 xtrac.osd.sara.nl. 145.100.12.233 Google's happy, at least. What about the original nameservers? $ dig NS oss.trace.sara.nl sara.nl. 3600 IN SOA nsauth1.sara.nl. nic.sara.nl. 2012122001 14400 7200 604800 86400 $ dig NS trace.sara.nl +short $ dig NS sara.nl +short nsauth2.sara.nl. ns2.surfnet.nl. nsauth1.sara.nl. $ for i in nic.sara.nl nsauth{1,2}.sara.nl ns2.surfnet.nl do echo == $i == dig +short oss.trace.sara.nl @$i done == nic.sara.nl == dig: couldn't get address for 'nic.sara.nl': not found == nsauth1.sara.nl == == nsauth2.sara.nl == == ns2.surfnet.nl == Hm, not very helpful. And I'm bored now, so you're on your own. (Hint: remove +short and read the details, I only added it here to keep the email terse.)