> -----Original Message----- > From: linux-net-owner@xxxxxxxxxxxxxxx > [mailto:linux-net-owner@xxxxxxxxxxxxxxx]On Behalf Of Anton Glinkov > Sent: Thursday, December 22, 2005 9:41 AM > To: linux-net@xxxxxxxxxxxxxxx > Subject: proxy_arp + windows arp requests > > > Hello. > > I noticed a strange behavior of proxy_arp when turned on in a > subnet with > unconfigured windows hosts. > > Here is the tcpdump log: > > # tcpdump -enpi eth0 arp > 19:02:58.987045 4c:00:10:00:49:35 > ff:ff:ff:ff:ff:ff, ethertype ARP > (0x0806), length 60: arp who-has 169.254.18.11 tell 169.254.18.11 The above looks like the windows autoconfiguration protocol in action. There's an IETF draft on it named draft-ietf-zeroconf-ipv4-linklocal-14.txt. Your favorite search engine should be able to find it. > 19:02:59.579282 00:0e:0c:a1:d6:31 > 4c:00:10:00:49:35, ethertype ARP > (0x0806), length 42: arp reply 169.254.18.11 is-at 00:0e:0c:a1:d6:31 > 19:02:59.579566 00:0e:0c:a1:d6:31 > ff:ff:ff:ff:ff:ff, ethertype ARP > (0x0806), length 60: arp who-has 169.254.18.11 tell 169.254.18.11 > 19:03:00.123318 00:0e:0c:a1:d6:31 > 00:0e:0c:a1:d6:31, ethertype ARP > (0x0806), length 42: arp reply 169.254.18.11 is-at 00:0e:0c:a1:d6:31 The above is strange. Have you configured the linux host to proxy for the 169.254/16 subnet? > 4c:00:10:00:49:35 - NIC of the Windows host > 00:0e:0c:a1:d6:31 - eth of the linux host (proxy_arp = on) > > > - > : send the line "unsubscribe > linux-net" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > > - : send the line "unsubscribe linux-net" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
