[OpenAFS] AFS clients and IP address 192.168.67.1

[Wheeler, JF (Jonathan)]

> -----Original Message-----
> From: Hartmut Reuter
> Sent: 04 January 2006 11:13
>=20
> Wheeler, JF (Jonathan) wrote:
> > Whilst investigating a network problem, one of our network gurus
noticed
> > that our AFS client systems are sending packets to IP address
> > 192.168.67.1 (I confirmed this by using tcpdump).  Issuing the
command:
> >=20
> > fs getserverprefs -numeric | grep 192
> >=20
> > gave the reply:
> >=20
> > 192.168.67.1                                       40006
> >=20
> > Please would someone explain what is happening here
>=20
> No. Probably one the fileservers contacted by this client has also a=20
> secondary private interface which is not masked by a NetInfo or
NetRestrict file.
> The server preferences of 40006 indicates it is a fileserver not=20
> belonging to your own network, so it's some work to find out where it=20
> belongs to.
>=20
> If you do a "vos listaddr -cell XXX" for all cells in your CellServDB=20
> you should be able to identify this server.

Further to the above query and the reply from Hartmut, I did as he
suggested and issued the command "vos listaddr -cell XXX" for all cells
in the CellServDB file on the system in question.  This generated a
large file (as expected) which included quote a lot if entries for the
network 192.168.*; I understand that this network segment is defined as
being non-routable so are there a number of sites which should have
NetRestrict or NetInfo files but do not, or is there some other
explanation ?

Here is output from the command "tcpdump 192.168.67.1":

11:57:02.587157 lcg0329.gridpp.rl.ac.uk.afs3-callback >
192.168.67.1.afs3-fileserver:  rx data fs call get-time (32) (DF)
11:57:04.647085 lcg0329.gridpp.rl.ac.uk.afs3-callback >
192.168.67.1.afs3-fileserver:  rx ack (65) (DF)
11:57:05.667117 lcg0329.gridpp.rl.ac.uk.afs3-callback >
192.168.67.1.afs3-fileserver:  rx data fs call get-time (32) (DF)
11:57:07.707266 lcg0329.gridpp.rl.ac.uk.afs3-callback >
192.168.67.1.afs3-fileserver:  rx ack (65) (DF)
11:57:09.237138 lcg0329.gridpp.rl.ac.uk.afs3-callback >
192.168.67.1.afs3-fileserver:  rx data fs call get-time (32) (DF)

Jonathan Wheeler
e-Science Centre
Rutherford Appleton Laboratory