[6bone] IPv6 NTP testing

Kimmo Suominen kim@tac.nyc.ny.us
Wed, 20 Aug 2003 10:28:59 -0400


Let's see if I understood this correctly way back...

ntpd needs to send responses back using the same IP address that it
received the original request on.  To track the addresses, it uses
separate file descriptors.

Cheers,
+ Kim


| From:    Pim van Pelt <pim@ipng.nl>
| Date:    Wed, 20 Aug 2003 12:31:17 +0200
|
| Hi,
|
| | I've setup a web page with a list of known and verified ipv6 ntp servers:
| Thanks for the list!
|
| I was looking at ntp1.bit.nl a bit and see that it's binding UDP sockets
| on any IP address it can find:
| udp4       0      0  127.0.0.1.123          *.*
| udp6       0      0  fe80:4::1.123          *.*
| udp6       0      0  ::1.123                *.*
| udp6       0      0  2001:7b8:3:2c::5.123   *.*
| udp6       0      0  2001:7b8:3:2c::1.123   *.*
| udp6       0      0  2001:7b8:3:2c:20.123   *.*
| udp4       0      0  213.136.12.53.123      *.*
| udp4       0      0  213.136.12.52.123      *.*
| udp6       0      0  fe80:1::202:b3ff.123   *.*
| udp4       0      0  213.136.12.51.123      *.*
|
| AND on the UDP unspecified address in both protocol families:
| udp6       0      0  *.123                  *.*
| udp4       0      0  *.123                  *.*
|
| Is there anybody who can explain this behavior, and perhaps have the
| server bind either to 'the unspecified, thus any' or to a specific IPv4
| IPv6 address ?