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Date: Mon, 1 May 2000 20:02:11 -0700 (PDT)
From: tparquet@twcny.rr.com
To: freebsd-gnats-submit@FreeBSD.org
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Subject: misc/18336: 3C905B-COMBO cannot find 10base-2 LAN
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>Number:         18336
>Category:       misc
>Synopsis:       3C905B-COMBO cannot find 10base-2 LAN
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon May  1 20:10:01 PDT 2000
>Closed-Date:
>Last-Modified:
>Originator:     Tom Parquette
>Release:        4.0-RELEASE
>Organization:
>Environment:
FreeBSD cerberus.parquette.baldwinsville.ny.us 
4.0-RELEASE FreeBSD 4.0-RELEASE #2: 
Sat Apr 29 18:45:20 GMT 2000 
root@cerberus.parquette.baldwinsville.ny.us:
/usr/src/sys/compile/CERBERUS i386
>Description:
The 3C905B card worked correctly under 3.4-RELEASE connected to my
10base-2 lan.  The hardware didn't change.
I installed 4.0-RELEASE over the Internet and the problem started.
(I no longer have the 3.4-RELEASE available for comparison.)

After boot, the machine will not talk to, or see the 10base-2 lan.
Pings return Host is down, tcpdump returns nothing.  A 3.4-RELEASE
machine on the same segment shows activity when tcpdump is issued.

If you ping the 4.0-RELEASE machine, pings return host is down.

I don't know if it makes a difference or not but xl0 also has isc-dhcpd
bound to it.  This gateway is also the dhcp server for the segment attached
to the xl0 nic.
>How-To-Repeat:
Set the nic to automatic configuration.  (I don't have the exact words
but it is supposed to automatically determine the media type.)

In rc.conf: 
ifconfig_xl0="inet 192.168.0.1 media autoselect netmask 255.255.255.224"
Boot the machine.
ifconfig xl0 returns:
xl0: flags=8843<up,broadcast,running,simplex,multicast> mtu 1500
inet 192.168.0.1 netmask 0xffffffe0 broadcast 192.168.0.31
ether: 00:50:04:6c:bf:21 media: autoselect(none) status: no carrier
Ping 192.168.0.6
Ping: sendto: host is down
Enter ifconfig xl0 media 10base2/BNC
Ping 192.168.0.6 
Ping works

>Fix:
When the boot is complete, signon as root and enter:
ifconfg xl0 media 10base2/BNC.

At this point, the machine works normally.
This is the only repeatable way I have found to get around the problem.

>Release-Note:
>Audit-Trail:
>Unformatted:


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