dig for Windows XP

I can't imagine the power and convenience of having dig in Windows XP. It really happened. I downloaded dig for windows from "http://serghei.net/windows/dig/" and then followed the instructions to edit c:\dig\resolv.conf to point to my resolver and then copy this file to c:\windows\system32\drivers\etc\resolv.conf.

Apart from dig, what I get additionally is whois and host utility. By now, I do not need to rely on Linux box to perform dig, host and whois.

babe face in IPv6 address

Interesting ! The network administrator of go6.si assigned an IPv6 address with the last 8 hex digits as babe face.

[root@test-server ~]# host -t aaaa go6.si
go6.si has IPv6 address 2a02:e8:0:1::babe:face

I can think of another one in the last 8 hex digits. How about "bad:cafe" ?

Passing IPv6 Certification for the rank of Sage

The IPv6 Certification for the rank of sage required me to have IPv6 glue records for the IPv6 name servers in the Top Level Domain Registry. After some investigations, I found out that HKDNR did not allow me to put IPv6 glue records (IPv6 addresses for ns1.bya,org.hk and ns2.bya.org.hk) to my name server records. This certainly stopped me to complete the sage test.

I switched to godaddy.com. It permitted me to add hosts for name servers with both IPv4 and IPv6 addresses. I thought it might take 2 days to propagate the added IPv4 and IPv6 glue records. Quite strange, the new records were propagated to all .com servers within 2 hours.

With all these completed, I login to Hurricane Electric and attempted the sage test again. I was able to pass as all the 13 .com authoritative name servers can show the glue records prepared by me.

I shall never forget the importance of putting glue records of name servers by means of "add host" function in the domain name registration interface.

virtual email domain in postfix

I have tried virtual email domain in postfix. It is very easy. To add abc.com as a virtual email domain, just edit the following line in /etc/postfix/main.cf

mydestination = $myhostname, localhost.$mydomain, localhost, abc.com,

Compared with Sendmail, Postfix is very user-friendly and easily configurable.

Miredo - Teredo Client in Linux

I succeeded in getting Miredo, the Teredo client for Linux and Unix, to work on my Centos 5.2. The processes as I can recall are as follows:

1. get the rpm package of miredo-1.0.6-1.el5.rf.rpm

2. rpm -ivh miredo-1.0.6-1.el5.rf.rpm

3. Edit /etc/miredo.conf

ServerAddress teredo.remlab.net

4. Add a line "miredo" in /etc/rc.d/rc.local for auto-start at boot up

5. Add a line "ifconfig teredo" in /etc/rc.local for auto-start at boot up

Very stable performance. I am addicted.

The Server teredo.ipv6.microsoft.com should not be used. I guess Microsoft Teredo Server might not support Teredo client in Linux.

Passing IPv6 Certification for the rank of guru

Last night, I decided to attempt the IPv6 test for the rank of guru granted by Hurricane Electric. It required me to build two IPv6-based name servers and answer AAAA queries from IPv6 addresses only. Of course, the NS records of the authoritative name servers must also have associated AAAA record. It was not an easy one. I spent 6 hours to get all problems resolved.

Next step is to enter the sage test. The test will check to see if the domain names I submiited have IPv6 glue at the registrar. I am not quite sure how to prepare and proceed.