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Date:      Tue, 5 Mar 2002 09:57:30 -0500
From:      Bill Vermillion <bv@wjv.com>
To:        stable@FreeBSD.ORG
Subject:   Re: recent networking troubles
Message-ID:  <20020305145730.GB43968@wjv.com>
In-Reply-To: <bulk.58273.20020305053448@hub.freebsd.org>
References:  <bulk.58273.20020305053448@hub.freebsd.org>

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> ------------------------------
> 
> Date: Mon, 04 Mar 2002 09:16:52 -0800
> From: Michael Sierchio <kudzu@tenebras.com>
> Subject: Re: recent networking troubles
> 
> Peter Schultz wrote:
> 
> > At system boot I see this message twice:
> > Starting final network daemons:rpc.umntall: 10.0.0.103: RPCPROG_MNT: 
> > RPC: Port mapper failure - RPC: Unable to send
> 
> That's normal -- your pccard stuff probably hasn't settled down yet, but
> you've got nfs compiled into the kernel rather than using a lkm, right?
> 
> > If I try to mount NFS exports I can only successfully do one, the others 
> > will fail with:
> > 10.0.0.100:/usr/ports/distfiles: RPCPROG_MNT: RPC: Timed out
> 
> What kind of network card are you using?  Are you using DHCP, or do
> you have a fixed address?  And is there a hostname entry in the local
> DNS in every local /etc/hosts for these hosts on the RFC 1918 net?
> What's your network setup?
> 
> > Another clue that something is wrong is when I try to ping one of my 
> > local machines:
> > PING bebox.jocose.org (216.239.16.183): 56 data bytes
> > 64 bytes from 216.239.16.183: icmp_seq=1 ttl=62 time=4035.362
> > 64 bytes from 216.239.16.183: icmp_seq=2 ttl=62 time=3025.446
> > 64 bytes from 216.239.16.183: icmp_seq=3 ttl=62 time=2015.578
> > 64 bytes from 216.239.16.183: icmp_seq=4 ttl=62 time=1005.654
> > 64 bytes from 216.239.16.183: icmp_seq=5 ttl=62 time=0.752

> That's pretty funny.  If you keep pinging, do the times keep getting
> smaller? ;-)

You will see that if the network comes up before the previous byte
is considered lost.  I used to get a big screen flash up when my
outgoing ppp hadn't finished negotiating.

Notice that each of the first four is almost exactly 1 second
[1000ms] smaller than the previous.  The packets are sent one each
second and the interface came up just about 4 seconds after the
first ping was sent that is why the first ping reply took 4
seconds, the next 3, and so on.

Bill
-- 
Bill Vermillion - bv @ wjv . com

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