Date: Mon, 15 Nov 2004 11:02:11 -0800 From: Wes Santee <wsantee@gmail.com> To: Josh Paetzel <josh@tcbug.org> Cc: freebsd-questions@freebsd.org Subject: Re: LAN unreachable after 5.3 install Message-ID: <80d3279c041115110214902092@mail.gmail.com> In-Reply-To: <200411151239.49858.josh@tcbug.org> References: <80d3279c04111510227422bb3a@mail.gmail.com> <200411151239.49858.josh@tcbug.org>
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On Mon, 15 Nov 2004 12:39:49 +0000, Josh Paetzel <josh@tcbug.org> wrote:
> On Monday 15 November 2004 18:22, Wes Santee wrote:
> > my problem is that after install, I can't
> > see my LAN. From the FreeBSD box I try this:
> >
> > ping -S 10.0.0.1 10.0.0.254
> >
> > but none of the pings are responded to. From 10.0.0.254, I try
> > pinging 10.0.0.1, but the result is the same.
> >
> > Okay, here is the WEIRD part: When I run tcpdump to see what's
> > going on, all of a sudden everything starts working! It's as if
> > going into promiscuous mode shuts off some kind of block that I
> > can't figure out. When I kill tcpdump, it goes back to not working
> > again.
>
> The output of ifconfig may be useful in tracking down your problem
Sure, here it is. xl1 is the LAN interface, tun0->xl0 is the PPPoE interface:
[wes@lister:/etc] 7 $ ifconfig -a
xl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
options=8<VLAN_MTU>
ether 00:60:97:a7:c9:01
media: Ethernet autoselect (100baseTX <full-duplex>)
status: active
xl1: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500
options=9<RXCSUM,VLAN_MTU>
inet 10.0.0.1 netmask 0xffffff00 broadcast 10.0.0.255
ether 00:10:5a:9a:11:8c
media: Ethernet autoselect (100baseTX <full-duplex>)
status: active
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
inet6 ::1 prefixlen 128
inet 127.0.0.1 netmask 0xff000000
tun0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1492
inet 216.113.200.107 --> 216.113.192.225 netmask 0xffffffff
Opened by PID 1895
Notice there are no IPv6 configurations. I put
net.inet6.ip6.auto_linklocal=0 in /etc/sysctl.conf as part of a
troubleshooting test to get PPPoE to work(*). I left it in after I
got PPPoE working because I don't use IPv6, but removing "options
INET6" from the kernel makes pf, ipfilter, and ipfw klds complain
loudly.
Cheers,
-Wes
(*) Long story. It took over 8 hours to get the PPPoE connection
working after the install. tcpdump would segfault during the PPP
handshaking do I couldn't even figure out what was going on. I
finally got it to work by putting "disable ipv6cp" in my ppp.conf
file. Otherwise it would sit and wait for carrier forever after the
first attempt.
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