Hello,
still trying to track why ssh doesn't work anymore, see my original
posting.
the PC is192.168.1.2 and the ADSL router 192.168.1.1. I have run
tcpdump on the PC eth0 interface, while the ssh connection
freezes, and found that, at a certain point:
1) the PC asks the DNS server (if I understand correctly) about the
router:
192.168.1.2.1047 > ammi.mclink.it.domain: 22723+ PTR? 1.1.168.192.in-addr.arpa. (42) (DF)
ammi.mclink.it.domain > 192.168.1.2.1047: 22723 NXDomain 0/1/0 (119)
2) after that PC and router start to ask each other their ethernet
addresses ("arp who-has 192.168.1.2 tell 192.168.1.1" and the related
arp replies) and viceversa, repeatedly.
3) when this happens, the pc and the ssh server seem to also go in a
loop, which eventually times out: several equal lines in the dump,
like:
23:27:10.780631 192.168.1.2.1772 > ssh.server.io.ssh: . ack 2096 win 8832 <nop,nop,timestamp 474677 141420442,nop,nop,sack sack 1 {2048:2096} > (DF) [tos 0x10]
Is 3) caused by 1) and 2)?
are 1) and 2) normal?
if they are not normal and causing ssh to freeze, how to fix them?
TIA,
Marco F.
--
Marco Fioretti m.fioretti, at the server inwind.it
Red Hat for low memory http://www.rule-project.org/en/
In a [wired by the Internet] mass media world, there is *less* of
everything except the top ten books, records, movies, ideas.
-- Michael Crichton, "The Lost World"
