I've got 1.5.2 installed on a powermac 7300.  Most things are working
beautifully, but I seem to be getting very slow downloads in the
territory of 1KB/s[1].  Others on the port-macppc list have reported
getting nearly 100 times this speed with identical hardware.

Everything works, it's just really slow.  The powermac is behind a
Linksys firewall/router combo device.  Other machines behind the same
firewall, in particular a i386 NetBSD 1.5.2 machine, achieve normal
download speeds.  Transfers are slow both from the powermac to
machines on the far side of the firewall, and from the powermac to
other machines behind the firewall.

Someone on port-macppc suggested swapping cables between the powermac
and the router.  I've done this with no effect.

I don't know how to make sense of things like tcpdump, but clearly
something relatively simple is wrong with my setup, and I haven't been
able to figure it out so far.  Any ideas about how to debug this
problem are appreciated.  I've included some output from tcpdump and
ifconfig below.

-russ


[1] An email similar to this one was previously sent to the
port-macppc list.  I reposted to netbsd-help in the hopes that more
people read netbsd-help, and I'm doubtful that the problem is macppc
specific.


Here is the output if ifconfig:

/export/russe 2$ ifconfig  mc0
ifconfig  mc0
mc0: flags=8863<UP,BROADCAST,NOTRAILERS,RUNNING,SIMPLEX,MULTICAST> mtu 1500
        address: 00:05:02:ce:73:66
        media: Ethernet manual
        inet 192.168.1.3 netmask 0xffffff00 broadcast 192.168.1.255
        inet6 fe80::205:2ff:fece:7366%mc0 prefixlen 64 scopeid 0x1 

Here is some tcpdump output captured before and during an ftp
transfer:

# /usr/sbin/tcpdump -n -i mc0 port ftp
tcpdump: listening on mc0
18:59:03.211732 192.168.1.3.65430 > 204.152.184.75.21: S 150795642:150795642(0) win 16384 <mss 1460,nop,wscale 0,nop,nop,timestamp 664747 0>
18:59:03.304256 204.152.184.75.21 > 192.168.1.3.65430: S 1697308607:1697308607(0) ack 150795643 win 32768 <mss 1460,nop,wscale 0,nop,nop,timestamp 0 664747>
18:59:03.304426 192.168.1.3.65430 > 204.152.184.75.21: . ack 1 win 17520 <nop,nop,timestamp 664747 0>
18:59:03.405677 204.152.184.75.21 > 192.168.1.3.65430: P 1:62(61) ack 1 win 33580 <nop,nop,timestamp 0 0>
18:59:03.412502 192.168.1.3.65430 > 204.152.184.75.21: P 1:17(16) ack 62 win 17520 <nop,nop,timestamp 664748 0> [tos 0x10]
18:59:03.509096 204.152.184.75.21 > 192.168.1.3.65430: P 62:111(49) ack 17 win 33580 <nop,nop,timestamp 0 664748>
18:59:03.514799 192.168.1.3.65430 > 204.152.184.75.21: P 17:39(22) ack 111 win 17520 <nop,nop,timestamp 664748 0> [tos 0x10]
18:59:03.610659 204.152.184.75.21 > 192.168.1.3.65430: P 111:117(6) ack 39 win 33580 <nop,nop,timestamp 0 664748>
18:59:03.611993 204.152.184.75.21 > 192.168.1.3.65430: . 117:617(500) ack 39 win 33580 <nop,nop,timestamp 0 664748>
18:59:03.612191 192.168.1.3.65430 > 204.152.184.75.21: . ack 617 win 17020 <nop,nop,timestamp 664748 0> [tos 0x10]
18:59:03.613009 204.152.184.75.21 > 192.168.1.3.65430: . 1117:1617(500) ack 39 win 33580 <nop,nop,timestamp 0 664748>
18:59:03.613170 192.168.1.3.65430 > 204.152.184.75.21: . ack 617 win 17020 <nop,nop,timestamp 664748 0> [tos 0x10]
18:59:05.201876 204.152.184.75.21 > 192.168.1.3.65430: . 617:1117(500) ack 39 win 33580 <nop,nop,timestamp 4 664748>
18:59:05.202178 192.168.1.3.65430 > 204.152.184.75.21: . ack 1617 win 16520 <nop,nop,timestamp 664751 4> [tos 0x10]
18:59:05.297071 204.152.184.75.21 > 192.168.1.3.65430: . 1617:2117(500) ack 39 win 33580 <nop,nop,timestamp 4 664748>
18:59:05.400152 192.168.1.3.65430 > 204.152.184.75.21: . ack 2117 win 17520 <nop,nop,timestamp 664752 4> [tos 0x10]
18:59:05.494039 204.152.184.75.21 > 192.168.1.3.65430: P 2117:2301(184) ack 39 win 33580 <nop,nop,timestamp 4 664748>
18:59:05.600125 192.168.1.3.65430 > 204.152.184.75.21: . ack 2301 win 17520 <nop,nop,timestamp 664752 4> [tos 0x10]
18:59:05.661752 192.168.1.3.65430 > 204.152.184.75.21: P 39:45(6) ack 2301 win 17520 <nop,nop,timestamp 664752 4> [tos 0x10]
18:59:05.778995 204.152.184.75.21 > 192.168.1.3.65430: P 2301:2350(49) ack 45 win 33580 <nop,nop,timestamp 5 664752>
18:59:05.790645 192.168.1.3.65430 > 204.152.184.75.21: P 45:50(5) ack 2350 win 17520 <nop,nop,timestamp 664752 5> [tos 0x10]
18:59:05.883775 204.152.184.75.21 > 192.168.1.3.65430: P 2350:2385(35) ack 50 win 33580 <nop,nop,timestamp 5 664752>
18:59:05.884764 192.168.1.3.65430 > 204.152.184.75.21: P 50:58(8) ack 2385 win 17520 <nop,nop,timestamp 664753 5> [tos 0x10]
18:59:05.980672 204.152.184.75.21 > 192.168.1.3.65430: P 2385:2405(20) ack 58 win 33580 <nop,nop,timestamp 5 664753>
18:59:05.986607 192.168.1.3.65430 > 204.152.184.75.21: P 58:67(9) ack 2405 win 17520 <nop,nop,timestamp 664753 5> [tos 0x10]
18:59:06.078818 204.152.184.75.21 > 192.168.1.3.65430: P 2405:2434(29) ack 67 win 33580 <nop,nop,timestamp 5 664753>
18:59:06.084952 192.168.1.3.65430 > 204.152.184.75.21: P 67:72(5) ack 2434 win 17520 <nop,nop,timestamp 664753 5> [tos 0x10]
18:59:06.187074 204.152.184.75.21 > 192.168.1.3.65430: P 2434:2472(38) ack 72 win 33580 <nop,nop,timestamp 6 664753>
18:59:06.187685 192.168.1.3.65430 > 204.152.184.75.21: P 72:84(12) ack 2472 win 17520 <nop,nop,timestamp 664753 6> [tos 0x10]
18:59:06.284639 204.152.184.75.21 > 192.168.1.3.65430: P 2472:2478(6) ack 84 win 33580 <nop,nop,timestamp 6 664753>
18:59:06.285989 204.152.184.75.21 > 192.168.1.3.65430: . 2478:2978(500) ack 84 win 33580 <nop,nop,timestamp 6 664753>
18:59:06.286185 192.168.1.3.65430 > 204.152.184.75.21: . ack 2978 win 17020 <nop,nop,timestamp 664753 6> [tos 0x10]
18:59:06.286450 204.152.184.75.21 > 192.168.1.3.65430: . 2978:3478(500) ack 84 win 33580 <nop,nop,timestamp 6 664753>
18:59:06.400118 192.168.1.3.65430 > 204.152.184.75.21: . ack 3478 win 17520 <nop,nop,timestamp 664754 6> [tos 0x10]
18:59:06.492106 204.152.184.75.21 > 192.168.1.3.65430: P 3478:3524(46) ack 84 win 33580 <nop,nop,timestamp 6 664753>
18:59:06.600104 192.168.1.3.65430 > 204.152.184.75.21: . ack 3524 win 17474 <nop,nop,timestamp 664754 6> [tos 0x10]
18:59:06.638275 192.168.1.3.65430 > 204.152.184.75.21: P 84:89(5) ack 3524 win 17520 <nop,nop,timestamp 664754 6> [tos 0x10]
18:59:06.730774 204.152.184.75.21 > 192.168.1.3.65430: P 3524:3569(45) ack 89 win 33580 <nop,nop,timestamp 7 664754>
18:59:06.731607 192.168.1.3.65430 > 204.152.184.75.21: P 89:107(18) ack 3569 win 17520 <nop,nop,timestamp 664754 7> [tos 0x10]
18:59:06.823126 204.152.184.75.21 > 192.168.1.3.65430: P 3569:3575(6) ack 107 win 33580 <nop,nop,timestamp 7 664754>
18:59:07.000126 192.168.1.3.65430 > 204.152.184.75.21: . ack 3575 win 17520 <nop,nop,timestamp 664755 7> [tos 0x10]
18:59:07.092258 204.152.184.75.21 > 192.168.1.3.65430: P 3575:3713(138) ack 107 win 33580 <nop,nop,timestamp 7 664754>
18:59:07.109489 192.168.1.3.65430 > 204.152.184.75.21: P 107:112(5) ack 3713 win 17520 <nop,nop,timestamp 664755 7> [tos 0x10]
18:59:07.207819 204.152.184.75.21 > 192.168.1.3.65430: P 3713:3771(58) ack 112 win 33580 <nop,nop,timestamp 8 664755>
18:59:07.208561 192.168.1.3.65430 > 204.152.184.75.21: P 112:124(12) ack 3771 win 17520 <nop,nop,timestamp 664755 8> [tos 0x10]
18:59:07.329709 204.152.184.75.21 > 192.168.1.3.65430: P 3771:3800(29) ack 124 win 33580 <nop,nop,timestamp 8 664755>
18:59:07.335759 192.168.1.3.65430 > 204.152.184.75.21: P 124:129(5) ack 3800 win 17520 <nop,nop,timestamp 664756 8> [tos 0x10]
18:59:07.432091 204.152.184.75.21 > 192.168.1.3.65430: P 3800:3865(65) ack 129 win 33580 <nop,nop,timestamp 8 664756>
18:59:07.439256 192.168.1.3.65430 > 204.152.184.75.21: P 129:147(18) ack 3865 win 17520 <nop,nop,timestamp 664756 8> [tos 0x10]
18:59:07.531733 204.152.184.75.21 > 192.168.1.3.65430: P 3865:3877(12) ack 147 win 33580 <nop,nop,timestamp 8 664756>
18:59:07.532354 192.168.1.3.65430 > 204.152.184.75.21: P 147:153(6) ack 3877 win 17520 <nop,nop,timestamp 664756 8> [tos 0x10]
18:59:07.664693 204.152.184.75.21 > 192.168.1.3.65430: P 3877:3925(48) ack 153 win 33580 <nop,nop,timestamp 9 664756>
18:59:07.759828 192.168.1.3.65430 > 204.152.184.75.21: P 153:171(18) ack 3925 win 17520 <nop,nop,timestamp 664756 9> [tos 0x10]
18:59:08.033501 204.152.184.75.21 > 192.168.1.3.65430: P 3925:4000(75) ack 171 win 33580 <nop,nop,timestamp 9 664756>
18:59:08.200050 192.168.1.3.65430 > 204.152.184.75.21: . ack 4000 win 17520 <nop,nop,timestamp 664757 9> [tos 0x10]
18:59:49.500993 192.168.1.3.65430 > 204.152.184.75.21: P 171:174(3) ack 4000 win 17520 urg 3 <nop,nop,timestamp 664840 9> [tos 0x10]
18:59:49.501182 192.168.1.3.65430 > 204.152.184.75.21: P 174:181(7) ack 4000 win 17520 <nop,nop,timestamp 664840 9> [tos 0x10]
18:59:49.599260 204.152.184.75.21 > 192.168.1.3.65430: . ack 181 win 33573 <nop,nop,timestamp 92 664840>
18:59:49.599675 204.152.184.75.21 > 192.168.1.3.65430: P 4000:4042(42) ack 181 win 33580 <nop,nop,timestamp 92 664840>
18:59:49.610148 192.168.1.3.65430 > 204.152.184.75.21: . ack 4042 win 17520 <nop,nop,timestamp 664840 92> [tos 0x10]
18:59:49.701493 204.152.184.75.21 > 192.168.1.3.65430: P 4042:4072(30) ack 181 win 33580 <nop,nop,timestamp 93 664840>
18:59:49.810100 192.168.1.3.65430 > 204.152.184.75.21: . ack 4072 win 17490 <nop,nop,timestamp 664840 93> [tos 0x10]
18:59:49.840714 192.168.1.3.65430 > 204.152.184.75.21: P 181:187(6) ack 4072 win 17520 <nop,nop,timestamp 664841 93> [tos 0x10]
18:59:49.968958 204.152.184.75.21 > 192.168.1.3.65430: P 4072:4078(6) ack 187 win 33580 <nop,nop,timestamp 93 664841>
18:59:49.969890 204.152.184.75.21 > 192.168.1.3.65430: FP 4078:4267(189) ack 187 win 33580 <nop,nop,timestamp 93 664841>
18:59:49.970076 192.168.1.3.65430 > 204.152.184.75.21: . ack 4268 win 17331 <nop,nop,timestamp 664841 93> [tos 0x10]
18:59:50.147410 192.168.1.3.65430 > 204.152.184.75.21: F 187:187(0) ack 4268 win 17520 <nop,nop,timestamp 664841 93> [tos 0x10]
18:59:50.241631 204.152.184.75.21 > 192.168.1.3.65430: . ack 188 win 33580 <nop,nop,timestamp 94 664841>

225 packets received by filter
0 packets dropped by kernel