DDNS update for wretar.dthink.net on sfdns1e2 failed

[amoners]

I updated it manually and it worked for me. May network problem?

Code:

[amoners@berners-lee dns]$ nsupdate -k ddns.key
> server 115.231.209.243
> update add wretar.dthink.net 600 A 61.92.242.11
> send
> quit
[amoners@berners-lee dns]$ ping wretar.dthink.net
PING wretar.dthink.net (61.92.242.11) 56(84) bytes of data.
64 bytes from 061092242011.ctinets.com (61.92.242.11): icmp_seq=1 ttl=52 time=34.8 ms
64 bytes from 061092242011.ctinets.com (61.92.242.11): icmp_seq=2 ttl=52 time=38.2 ms
64 bytes from 061092242011.ctinets.com (61.92.242.11): icmp_seq=3 ttl=52 time=36.3 ms
64 bytes from 061092242011.ctinets.com (61.92.242.11): icmp_seq=4 ttl=52 time=38.0 ms