Date: Wed, 06 Jun 2001 17:09:16 -0700 From: "Matthew K. Cowger" <mcowger@bowdoin.edu> To: pjklist@ekahuna.com Cc: questions@FreeBSD.ORG Subject: Re: "Unknown hardware address format" Message-ID: <17c59317ef57.17ef5717c593@bowdoin.edu>
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Philip, et. al. I get these as well, somedays alot of them, some days not. I am running in a mixed environment (5+ DEC Alphas, 20+ COmpaq NT Boxes, Dell Linux Boxes, and a couple macs), And these Unknown Hardware Address fromat messages endup in my logs on my BSD box all day long (old Compaq 266 w/ Intel EtherExpress PRo 10/100). I'll be happy to sent any log output...it would be nice to get rid of these, or find out what machine is sending them. .matt ----- Original Message ----- From: "Philip J. Koenig" <pjklist@ekahuna.com> Date: Wednesday, June 6, 2001 5:04 pm Subject: "Unknown hardware address format" > I posted a similiar question to this list and the Security list on > 5/28 and didn't get any definitive replies. > > Today I am seeing the same message, out of the blue, in my syslog > and > echoed to console (4.3-STABLE): > > io /kernel: arp: unknown hardware address format (0x0800) > > I searched the mailing list archives to no avail, but ran across > some > stuff on altavista, apparently 0800 matches both IP and arp > protocol > numbers, here is apparently some kernel code that generates this > message (if_ether.c), from the URL below: > > http://minnie.tuhs.org/FreeBSD- > srctree/newsrc/netinet/if_ether.c.html > ----------------- Begin code snippet -------------------- > if (ntohs(ar->ar_hrd) != ARPHRD_ETHER > && ntohs(ar->ar_hrd) != ARPHRD_IEEE802) { > log(LOG_ERR, > "arp: unknown hardware address format (0x%2D)\n", > (unsigned char *)&ar->ar_hrd, ""); > m_freem(m); > continue; > } > --------------------- End code snippet ------------------ > > > I keep worrying it may be a security breach or something, or maybe > a > piece of failing network hardware. I'd rather not join one of the > kernel lists just to ask this question, so if anyone is a > kernel/net > hacker or would like to forward it to one, i'd appreciate it.. > > Thx, > > > Phil > > > > -- > Philip J. Koenig > pjklist@ekahuna.comElectric Kahuna Systems -- Computers & > Communications for the New Millenium > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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