Date: Mon, 24 Nov 2003 22:05:51 +0200 From: Johann Hugo <jhugo@icomtek.csir.co.za> To: Sam Leffler <sam@errno.com>, Barney Wolff <barney@databus.com> Cc: current@freebsd.org Subject: Re: atheros (ath) - duplicate packets with long distance link Message-ID: <200311242205.51664.jhugo@icomtek.csir.co.za> In-Reply-To: <200311241122.27490.sam@errno.com> References: <bk7c8o$rdo$1@sea.gmane.org> <20031124170728.GA36748@pit.databus.com> <200311241122.27490.sam@errno.com>
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On Monday 24 November 2003 21:22, Sam Leffler wrote: > tcpdump -e -i ath0 -y IEEE802_11 > > and verify the 802.11 frames are actual duplicates. They should not be > unless there's a bug in the duplicate suppression logic in the 802.11 code. The packets are definately from the same host. Will it help if I recompile with AR_DEBUG turned on ? PING 192.168.10.10 (192.168.10.10): 56 data bytes 64 bytes from 192.168.10.10: icmp_seq=0 ttl=64 time=4.373 ms 64 bytes from 192.168.10.10: icmp_seq=0 ttl=64 time=74.278 ms (DUP!) 64 bytes from 192.168.10.10: icmp_seq=1 ttl=64 time=2.646 ms 64 bytes from 192.168.10.10: icmp_seq=1 ttl=64 time=83.930 ms (DUP!) 64 bytes from 192.168.10.10: icmp_seq=2 ttl=64 time=2.631 ms 64 bytes from 192.168.10.10: icmp_seq=3 ttl=64 time=4.127 ms atheros# tcpdump -e -i ath0 -y IEEE802_11 proto ICMP tcpdump: data link type DLT_IEEE802_11 tcpdump: listening on ath0 00:04:57.452451 BSSID:0:5:5d:95:ef:2c SA:0:5:5d:95:f0:4 DA:0:5:5d:95:ef:2c 192.1 68.10.20 > 192.168.10.10: icmp: echo request 00:04:57.455152 DA:0:5:5d:95:f0:4 BSSID:0:5:5d:95:ef:2c SA:0:5:5d:95:ef:2c 192.1 68.10.10 > 192.168.10.20: icmp: echo reply 00:04:57.457598 DA:0:5:5d:95:f0:4 BSSID:0:5:5d:95:ef:2c SA:0:5:5d:95:ef:2c 192.1 68.10.10 > 192.168.10.20: icmp: echo reply 00:04:57.461559 DA:0:5:5d:95:f0:4 BSSID:0:5:5d:95:ef:2c SA:0:5:5d:95:ef:2c 192.1 68.10.10 > 192.168.10.20: icmp: echo reply 00:04:57.467485 DA:0:5:5d:95:f0:4 BSSID:0:5:5d:95:ef:2c SA:0:5:5d:95:ef:2c 192.1 68.10.10 > 192.168.10.20: icmp: echo reply 00:04:57.478495 DA:0:5:5d:95:f0:4 BSSID:0:5:5d:95:ef:2c SA:0:5:5d:95:ef:2c 192.1 68.10.10 > 192.168.10.20: icmp: echo reply 00:04:57.483984 DA:0:5:5d:95:f0:4 BSSID:0:5:5d:95:ef:2c SA:0:5:5d:95:ef:2c 192.1 68.10.10 > 192.168.10.20: icmp: echo reply 00:04:57.490683 DA:0:5:5d:95:f0:4 BSSID:0:5:5d:95:ef:2c SA:0:5:5d:95:ef:2c 192.1 68.10.10 > 192.168.10.20: icmp: echo reply 00:04:57.509604 DA:0:5:5d:95:f0:4 BSSID:0:5:5d:95:ef:2c SA:0:5:5d:95:ef:2c 192.1 68.10.10 > 192.168.10.20: icmp: echo reply 00:04:57.531031 DA:0:5:5d:95:f0:4 BSSID:0:5:5d:95:ef:2c SA:0:5:5d:95:ef:2c 192.1 68.10.10 > 192.168.10.20: icmp: echo reply 00:04:57.546951 DA:0:5:5d:95:f0:4 BSSID:0:5:5d:95:ef:2c SA:0:5:5d:95:ef:2c 192.1 68.10.10 > 192.168.10.20: icmp: echo reply 00:04:57.557694 DA:0:5:5d:95:f0:4 BSSID:0:5:5d:95:ef:2c SA:0:5:5d:95:ef:2c 192.1 68.10.10 > 192.168.10.20: icmp: echo reply 00:04:58.469354 BSSID:0:5:5d:95:ef:2c SA:0:5:5d:95:f0:4 DA:0:5:5d:95:ef:2c 192.1 68.10.20 > 192.168.10.10: icmp: echo request 00:04:58.473004 DA:0:5:5d:95:f0:4 BSSID:0:5:5d:95:ef:2c SA:0:5:5d:95:ef:2c 192.1 68.10.10 > 192.168.10.20: icmp: echo reply 00:04:58.476335 DA:0:5:5d:95:f0:4 BSSID:0:5:5d:95:ef:2c SA:0:5:5d:95:ef:2c 192.1 68.10.10 > 192.168.10.20: icmp: echo reply 00:04:58.488546 DA:0:5:5d:95:f0:4 BSSID:0:5:5d:95:ef:2c SA:0:5:5d:95:ef:2c 192.1 68.10.10 > 192.168.10.20: icmp: echo reply 00:04:58.508876 DA:0:5:5d:95:f0:4 BSSID:0:5:5d:95:ef:2c SA:0:5:5d:95:ef:2c 192.1 68.10.10 > 192.168.10.20: icmp: echo reply 00:04:58.521360 DA:0:5:5d:95:f0:4 BSSID:0:5:5d:95:ef:2c SA:0:5:5d:95:ef:2c 192.1 68.10.10 > 192.168.10.20: icmp: echo reply 00:04:58.528470 DA:0:5:5d:95:f0:4 BSSID:0:5:5d:95:ef:2c SA:0:5:5d:95:ef:2c 192.1 68.10.10 > 192.168.10.20: icmp: echo reply 00:04:58.537460 DA:0:5:5d:95:f0:4 BSSID:0:5:5d:95:ef:2c SA:0:5:5d:95:ef:2c 192.1 68.10.10 > 192.168.10.20: icmp: echo reply 00:04:58.547434 DA:0:5:5d:95:f0:4 BSSID:0:5:5d:95:ef:2c SA:0:5:5d:95:ef:2c 192.1 68.10.10 > 192.168.10.20: icmp: echo reply 00:04:58.551423 DA:0:5:5d:95:f0:4 BSSID:0:5:5d:95:ef:2c SA:0:5:5d:95:ef:2c 192.1 68.10.10 > 192.168.10.20: icmp: echo reply 00:04:59.479303 BSSID:0:5:5d:95:ef:2c SA:0:5:5d:95:f0:4 DA:0:5:5d:95:ef:2c 192.1 68.10.20 > 192.168.10.10: icmp: echo request Johann
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