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When I'm trying to join Ubuntu client machine to domain server I'm getting this error:

Error: DNS_ERROR_BAD_PACKET [code 0x0000251e]
A bad packet was received from a DNS server. Potentially the requested address
does not exist.
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We are talking about Windows AD? How do you join? Is the firewall off on both systems? Is the DNS name known on both systems? Your DNS has a reverse lookup zone? What does cat /etc/resolv.conf show? –  Rinzwind Jul 9 '13 at 11:32
    
Yes i am talking about windows AD. I'm joining through windows active directory as well as through command also sudo domainjoin-cli join fqdn.of.your.domain Administrator. Dns name also known. when i execute cat /etc/resolv.conf showing this " # Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8) # DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN nameserver 127.0.1.1 " –  user2542932 Jul 9 '13 at 13:25

2 Answers 2

This issue occurs when /etc/resolve.conf is not setup properly.

Here is a sample resolv.conf:

domain     domain.tld
search     domain.tld
nameserver <ip address of domain DNS server>
nameserver <ip address of domain DNS server>
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I had this problem and spent 5 days trawling through forums. In the end I found a little note about DNS being picky about the spelling.

I fixed this by ensuring I used the uppercase letters in the FQDN where necessary. Windows doesn't care about upper and lower case but Linux does so try that.

The command I used was sudo domainjoin-cli join --disable ssh {domain name} {domain admin account name}

Hope this helps someone.

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