[ipxe-devel] Unable to resolve CNAME

[Nicolas Sylvain]

Hello,

After a few months without updating my iPXE binary, I updated it and now
I'm unable to resolve any CNAME.

The only change I have to my build is the defines to enable HTTPS and the
nslookup command. I also have DEBUG=dns

I'm using ipv4 only.

I have no problem resolving any other hostnames.

Here is one example:

iPXE> set dns 8.8.8.8
DNS using nameserver 8.8.8.8
DNS search list: localdomain
IPXE> nslookup address storage.googleapis.com
DNS 0xcd924 sending query ID 0x0734 for storage.googleapis.com type A
DNS 0xcd924 received response ID 0x0734
DNS 0xcd924 found CNAME storage-ugc.l.googleusercontent.com
DNS 0xcd924 found no A record; trying CNAME
DNS 0xcd924 sending query ID 0xb701 for storage-ugc.l.googleus type CNAME
DNS 0xcd924 sending query ID 0x797b for storage-ugc.l.googleus type CNAME
DNS 0xcd924 sending query ID 0x978e for storage-ugc.l.googleus type CNAME
DNS 0xcd924 sending query ID 0x6d42 for storage-ugc.l.googleus type CNAME
DNS 0xcd924 sending query ID 0x6d1b for storage-ugc.l.googleus type CNAME
could not resolve storage.googleapis.com: Connection timed out (
http://ipxe.org/4c116035)


www.cnn.com fails as well, but this one because of a "recursion exceeded".

I looked around on ipxe-devel and found this thread:
http://lists.ipxe.org/pipermail/ipxe-devel/2013-December/002986.html

I haven't actually bisected myself, but if I rollback
before 6248894f52b5794970292ea40f68fe0c892eafec , the DNS starts working
again.

Let me know if you need any other debug info to help troubleshoot this
issue.

Thank you,

Nicolas
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