Hello,With bind9 server (I can reproduce that on RHEL7 with 9.9.4, debian stable with 9.10.3 and also debian unstable with 9.11.4) when doing "dig ds c10r.facebook.com @10.122.17.186", I get a SERVFAIL.
I'm getting this with either a bind acting as a forwarder or as a recursive server. In the forwarder case, if I'm doing the query on the servers where the query is forwarded to, it is working fine.
I get the same result if I'm doing the query on the server at https://www.dns-oarc.net/oarc/services/odvr
I've attached here the capture of the network traffic when bind is acting as a forwarder (option forward=first so that's why you see a query to facebook server as well)
An idea? Kind regards, Laurent Bigonville
facebook.pcap.gz
Description: application/gzip
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