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Old 31st December 2009
mayuka mayuka is offline
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Default problems with wifi access point

Hello.

I'm trying to build an OpenBSD wifi access point for my home office but after some trying I still have some problems. Maybe you can help me here?

I have the following wifi usb adapter:
Quote:
Dec 31 11:06:12 router /bsd: rum0 at uhub0
Dec 31 11:06:12 router /bsd: port 2 "Ralink 802.11 bg WLAN" rev 2.00/0.01 addr 3
Dec 31 11:06:13 router /bsd: rum0: MAC/BBP RT2573 (rev 0x2573a), RF RT2528, address 90:e6:ba:f0:0a:0f
first, I'm configuring the wifi network device with wpa2:
Quote:
# ifconfig rum0 192.168.2.254 255.255.255.0 media autoselect mode 11g mediaopt hostap nwid test wpa wpaprotos wpa2 wpaakms psk wpapsk `wpa-psk test password` up
ifconfig rum0 shows the following:
Quote:
# ifconfig rum0
rum0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
lladdr 90:e6:ee:c0:ca:0f
priority: 4
groups: wlan
media: IEEE802.11 autoselect mode 11g hostap
status: active
ieee80211: nwid test chan 2 bssid 90:e6:ba:f0:0a:0f wpapsk 0xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxx wpaprotos wpa2 wpaakms psk wpaciphers tkip,ccmp wpagroupcipher tkip 100dBm
inet 192.168.2.254 netmask 0xffffff00 broadcast 255.255.255.0
inet6 fe80::92e6:baff:fef0:a0f%rum0 prefixlen 64 scopeid 0x7
after that, the following kernel massage appears, should I worry about that?
Quote:
Dec 31 11:36:55 router /bsd: ehci_idone: ex=0xe0328a00 is done!
then, I'm starting dhcpd which listens on rum0 with the following config:
Quote:
option subnet-mask 255.255.255.0;
default-lease-time 7200;
max-lease-time 14400;
authoritative;
subnet 192.168.2.0 netmask 255.255.255.0 {
option broadcast-address 192.168.2.255;
option routers 192.168.2.254;
option domain-name-servers xxx.xxx.xxx.xxx;
range 192.168.2.101 192.168.2.105;
}
So far so good. I configured the pf firewall to pass all traffic from or to rum0 for the time being and change that later. I added NAT on rum0.

Do I need hostapd?
My firewall shows some igmp traffic. Is that necessary?

When I'm connecting a client (my iphone or an old apple laptop) to the wifi network it correctly connects and I can browse the web, but every 10 seconds the interface re-initializes (shuts down and connects immediately). Every 10 sec dhcp requests from the client and ACKs from my router will appear. There seems to be something wrong here...
Quote:
Dec 31 11:18:50 router dhcpd[19526]: DHCPREQUEST for 192.168.2.102 from 00:33:36:3f:dc:b2 via rum0
Dec 31 11:18:50 router dhcpd[19526]: DHCPACK on 192.168.2.102 to 00:33:36:3f:dc:b2 via rum0
Dec 31 11:19:01 router dhcpd[19526]: DHCPREQUEST for 192.168.2.102 from 00:33:36:3f:dc:b2 via rum0
Dec 31 11:19:01 router dhcpd[19526]: DHCPACK on 192.168.2.102 to 00:33:36:3f:dc:b2 via rum0
Dec 31 11:19:14 router dhcpd[19526]: DHCPREQUEST for 192.168.2.102 from 00:33:36:3f:dc:b2 via rum0
Dec 31 11:19:14 router dhcpd[19526]: DHCPACK on 192.168.2.102 to 00:33:36:3f:dc:b2 via rum0
Any help would be gladly appreciated.

And I happy new year to all of you!
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Old 1st January 2010
There0 There0 is offline
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I will be trying out something similar to this quite soon (bath and food first) and will post back on my results.
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Old 1st January 2010
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Have you tried specifying a channel? chan 2 might cause problems, or perhaps some type of USB power/compatability setting?

Just testing out configs almost ready to post back on it.
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Old 1st January 2010
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Hmm oddly enough i am showing "status: no network" for some reason (on 2 different computers) although i got everything else configured and are able to ping that IP address, i have "no network" ... as soon as i get past that i will try to post something helpful.

Update; I also tried an atheros based Dlink PCMCIA card with exactly the same results "status: no network" sheeeet already.....
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Last edited by There0; 1st January 2010 at 09:42 AM.
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Old 1st January 2010
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If anybody has any information regarding the "status: no network" problem i am experiencing please come forth I have spent almost 3 hours on this googleing my eyes off with no results, thx.
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Old 1st January 2010
mayuka mayuka is offline
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I switched the channels and played with the options a while (using 11b instead of 11g and other modes) but with every setting I've got the same results: host connects, after about 10 seconds it disconnects. Maybe something with the encryption? wpa2 not working properly? I also turned off dhcpd and gave the host manual ip addresses, no change either. This is the only thing that turns out in the logs:

Quote:
Jan 01 11:35:39.645899 rule 19/(ip-option) pass in on rum0: 192.168.2.102 > 224.0.0.2: igmp leave 224.0.0.251
Jan 01 11:35:39.652837 rule 19/(ip-option) pass in on rum0: 192.168.2.102 > 224.0.0.251: igmp nreport 224.0.0.251
Jan 01 11:35:40.856841 rule 19/(ip-option) pass in on rum0: 192.168.2.102 > 224.0.0.251: igmp nreport 224.0.0.251
Jan 01 11:35:56.385936 rule 19/(ip-option) pass in on rum0: 192.168.2.102 > 224.0.0.2: igmp leave 224.0.0.251
Jan 01 11:35:56.386263 rule 19/(ip-option) pass in on rum0: 192.168.2.102 > 224.0.0.251: igmp nreport 224.0.0.251
Jan 01 11:36:02.994187 rule 19/(ip-option) pass in on rum0: 192.168.2.102 > 224.0.0.251: igmp nreport 224.0.0.251
Jan 01 11:36:08.103319 rule 19/(ip-option) pass in on rum0: 192.168.2.102 > 224.0.0.2: igmp leave 224.0.0.251
And no, sorry, I can't explain why you're getting "no network". I'm using a plain OpenBSD 4.6 installed from scratch a few days ago. (Instead of just updating I decided to re-install the whole thing from 4.4.)
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Old 1st January 2010
J65nko J65nko is offline
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Insert as first rule a block log (all) . Then run tcpdump on the pflog0 device. Make a connection and see whether you see any blocked traffic.
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Old 1st January 2010
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Quote:
And no, sorry, I can't explain why you're getting "no network". I'm using a plain OpenBSD 4.6 installed from scratch a few days ago. (Instead of just updating I decided to re-install the whole thing from 4.4.)
Am i out of line in asking if you have tried this setup WITHOUT any type of encryption?

For some reason i just spent another hour or so scouring the mailing list for something, no luck yet, might post there and see what happens. Oddly enough these are all working fine daily pieces of hardware, leaves me a bit shocked as this is a fresh install as well ...
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Old 1st January 2010
mayuka mayuka is offline
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Ok. This seems to be all kind of traffic generated when I'm connecting my apple notebook without any encryption:

Code:
Jan 01 12:27:14.995251 rule 19/(ip-option) pass in on rum0: 192.168.2.101 > 224.0.0.2: igmp leave 224.0.0.251
Jan 01 12:27:14.995492 rule 19/(ip-option) pass in on rum0: 192.168.2.101 > 224.0.0.251: igmp nreport 224.0.0.251
Jan 01 12:27:15.233747 rule 141/(match) block in on rum0: 192.168.2.101.63186 > 192.168.2.255.137: udp 50
Jan 01 12:27:15.503536 rule 141/(match) block in on rum0: 192.168.2.101.63186 > 192.168.2.255.137: udp 50
Jan 01 12:27:15.773348 rule 141/(match) block in on rum0: 192.168.2.101.63186 > 192.168.2.255.137: udp 50
Jan 01 12:27:16.005773 rule 141/(match) block in on rum0: 192.168.2.101.52465 > 192.168.2.254.192: udp 4
Jan 01 12:27:16.345618 rule 19/(ip-option) pass in on rum0: 192.168.2.101 > 224.0.0.251: igmp nreport 224.0.0.251
Jan 01 12:27:16.506266 rule 141/(match) block in on rum0: 192.168.2.101.63282 > 192.168.2.254.192: udp 4
Jan 01 12:27:18.007505 rule 141/(match) block in on rum0: 192.168.2.101.54894 > 192.168.2.254.192: udp 4
Jan 01 12:27:18.501488 rule 141/(match) block in on rum0: 192.168.2.101.51276 > 192.168.2.255.137: udp 50
Jan 01 12:27:18.501675 rule 141/(match) block in on rum0: 192.168.2.101.65155 > 192.168.2.254.192: udp 4
Jan 01 12:27:18.772553 rule 141/(match) block in on rum0: 192.168.2.101.51276 > 192.168.2.255.137: udp 50
Jan 01 12:27:19.040897 rule 141/(match) block in on rum0: 192.168.2.101.51276 > 192.168.2.255.137: udp 50
Jan 01 12:27:19.999965 rule 141/(match) block in on rum0: 192.168.2.101.57817 > 192.168.2.254.192: udp 4
Jan 01 12:27:20.498712 rule 141/(match) block in on rum0: 192.168.2.101.55357 > 192.168.2.254.192: udp 4
In the syslog-file, dhcpd reports the following:
Code:
Jan  1 12:26:48 router dhcpd[18319]: DHCPDISCOVER from 00:33:36:37:78:8e via rum0
Jan  1 12:26:48 router dhcpd[18319]: icmp_echorequest 192.168.2.101: No route to host
Jan  1 12:26:48 router dhcpd[18319]: DHCPOFFER on 192.168.2.101 to 00:33:36:37:78:8e via rum0
Jan  1 12:26:49 router dhcpd[18319]: DHCPREQUEST for 192.168.2.101 from 00:33:36:37:78:8e via rum0
Jan  1 12:26:49 router dhcpd[18319]: DHCPACK on 192.168.2.101 to 00:33:36:37:78:8e via rum0
Jan  1 12:27:12 router dhcpd[18319]: DHCPREQUEST for 192.168.2.101 from 00:33:36:37:78:8e via rum0
Jan  1 12:27:12 router dhcpd[18319]: DHCPACK on 192.168.2.101 to 00:33:36:37:78:8e via rum0
This is my current routing table (I blacked out the mac addresses and some provider-specific ip addresses):
Code:
# route -n show
Routing tables

Internet:
Destination        Gateway            Flags   Refs      Use   Mtu  Prio Iface
default            xxx.xxx.xxx.xxx    UGS       10   573911     -     8 axe0
192.168.1/24       link#2             UC         2        0     -     4 gem0
192.168.1.1        00:xx:xx:xx:xx:xx  UHLc       1      278     -     4 lo0
192.168.1.96       00:xx:xx:xx:xx:xx  UHLc       5   568082     - L   4 gem0
127/8              127.0.0.1          UGRS       0        0 33200     8 lo0
127.0.0.1          127.0.0.1          UH         4  2399870 33200     4 lo0
xxx.xxx.xx/21      link#5             UC         1        0     -     4 axe0
xxx.xxx.xxx.xxx    127.0.0.1          UGHS       0     1067 33200     8 lo0
xxx.xxx.xxx.xxx    00:xx:xx:xx:xx:xx  UHLc       1        0     -     4 axe0
192.168.2/24       link#7             C          2        0     -     4 rum0
192.168.2.101      00:xx:xx:xx:xx:xx  HLc        1        1     -     4 rum0
192.168.2.102      00:xx:xx:xx:xx:xx  HLc        0        7     -     4 rum0
224/4              127.0.0.1          URS        0      283 33200     8 lo0
Maybe there's a routing issue here? Why should report dhcpd "nor route to host" then?

Last edited by J65nko; 1st January 2010 at 12:55 PM. Reason: s/quote/code/g tags
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Old 1st January 2010
mayuka mayuka is offline
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O... I forgot to mention. I'm using a Mac mini for all this. So architecture is MacPPC.
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Old 1st January 2010
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Ah... Maybe there is a wrong route here...

Quote:
# telnet 192.168.2.101 22
Trying 192.168.2.101...
telnet: connect to address 192.168.2.101: No route to host
and the firewall reports:
Quote:
Jan 01 12:43:13.616167 rule 141/(match) block out on rum0: 192.168.2.254.38531 > 192.168.2.101.22: S 2055694503:2055694503(0) win 16384 <mss 1460,nop,nop,sackOK,nop,wscale 0,[|tcp]> (DF) [tos 0x10]
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Old 1st January 2010
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Argh.... No... False alarm... Just a wrong entry in the firewall I've added 5 minutes ago.

I'm allowing any traffic on rum0 (the wifi interface) and that's what happening.
Quote:
Jan 01 12:47:15.738548 rule 11/(ip-option) pass in on rum0: 192.168.2.101 > 224.0.0.2: igmp leave 224.0.0.251
Jan 01 12:47:15.738724 rule 11/(match) pass in on rum0: 192.168.2.101 > 224.0.0.251: igmp nreport 224.0.0.251 [ttl 1]
Jan 01 12:47:15.738730 rule 11/(ip-option) pass in on rum0: 192.168.2.101 > 224.0.0.251: igmp nreport 224.0.0.251
Jan 01 12:47:16.397856 rule 11/(match) pass in on rum0: 192.168.2.101.60287 > 192.168.2.255.137: udp 50
Jan 01 12:47:16.736765 rule 11/(match) pass in on rum0: 192.168.2.101.52823 > 192.168.2.254.192: udp 4
Jan 01 12:47:17.246230 rule 11/(match) pass in on rum0: 192.168.2.101.64561 > 192.168.2.254.192: udp 4
Jan 01 12:47:18.733738 rule 11/(match) pass in on rum0: 192.168.2.101.55744 > 192.168.2.254.192: udp 4
Jan 01 12:47:19.232753 rule 11/(match) pass in on rum0: 192.168.2.101.64212 > 192.168.2.254.192: udp 4
Jan 01 12:47:19.679862 rule 11/(match) pass in on rum0: 192.168.2.101.57202 > 192.168.2.255.137: udp 50
Jan 01 12:47:20.311244 rule 11/(ip-option) pass in on rum0: 192.168.2.101 > 224.0.0.251: igmp nreport 224.0.0.251
Jan 01 12:47:20.730739 rule 11/(match) pass in on rum0: 192.168.2.101.62021 > 192.168.2.254.192: udp 4
Jan 01 12:47:21.230989 rule 11/(match) pass in on rum0: 192.168.2.101.49412 > 192.168.2.254.192: udp 4
Jan 01 12:47:22.572255 rule 12/(match) pass out on rum0: 192.168.2.254.41520 > 192.168.2.101.23: S 3274908327:3274908327(0) win 16384 <mss 1460,nop,nop,sackOK,nop,wscale 0,[|tcp]> (DF) [tos 0x10]
Jan 01 12:47:38.042726 rule 11/(match) pass in on rum0: 0.0.0.0.68 > 255.255.255.255.67: xid:0x84d3b589 [|bootp]
Jan 01 12:47:38.056897 rule 11/(match) pass in on rum0: 192.168.2.101.62424 > 192.168.2.254.192: udp 4
Jan 01 12:47:38.555874 rule 11/(match) pass in on rum0: 192.168.2.101.54490 > 192.168.2.254.192: udp 4
Jan 01 12:47:39.071327 rule 11/(match) pass in on rum0: 192.168.2.101.65517 > 192.168.2.254.192: udp 4
Jan 01 12:47:39.570346 rule 11/(match) pass in on rum0: 192.168.2.101.60534 > 192.168.2.254.192: udp 4
Jan 01 12:47:40.105239 rule 11/(ip-option) pass in on rum0: 192.168.2.101 > 224.0.0.2: igmp leave 224.0.0.251
Jan 01 12:47:40.105442 rule 11/(ip-option) pass in on rum0: 192.168.2.101 > 224.0.0.251: igmp nreport 224.0.0.251
Jan 01 12:47:40.340649 rule 11/(match) pass in on rum0: 192.168.2.101.61742 > 192.168.2.255.137: udp 50
Jan 01 12:47:41.068327 rule 11/(match) pass in on rum0: 192.168.2.101.56648 > 192.168.2.254.192: udp 4
Sorry for the confusion. The host still disconnects after about 10 seconds and without encryption it won't re-connect automatically.
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Old 1st January 2010
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Some what interesting, have you checked for any specifics (errors/bugs) regarding MacPPC and that rum driver? Also has this ever worked "properly"?

May i also ask why your using a ppc arch? is your macmini a pre 2006 model (G4)? i am assuming that your mac mini is an Intel based cpu? if it came OS X your better off using i386 arch.
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Last edited by There0; 1st January 2010 at 12:29 PM.
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Old 1st January 2010
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Quote:
Originally Posted by There0 View Post
Some what interesting, have you checked for any specifics (errors/bugs) regarding MacPPC and that rum driver? Also has this ever worked "properly"?
I dont know. I'm using a Asus WL-167g usb adapter for this. Normally it shouldn't make any differences because that adapter is USB. But I'll check out the notes for MacPPC on the OpenBSD website.

Quote:
Originally Posted by There0 View Post
May i also ask why your using a ppc arch? is your macmini a pre 2006 model? i am assuming that your mac mini is a core 2 duo based cpu? if so your better off using i386 arch.
This is an old Mac mini (2nd generation) from 2004 or so which has a PowerPC processor in it. About 4 years ago Apple switched to i386. But my Mac mini is still from the old times before the switch. I can provide you with the dmesg output if you'd like.
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Quote:
I dont know. I'm using a Asus WL-167g usb adapter for this. Normally it shouldn't make any differences because that adapter is USB. But I'll check out the notes for MacPPC on the OpenBSD website.
Ensure to test that USB adaptor in another known good and working computer and router (hopefully you have) While i have had luck with USB wifi adaptors, i would not trust them fully, that is just me though.

Asus makes some good stuff, but it could very well be a driver issue or arch issue. I would get it verified working in Windoz (-_-) yuk i know, but usually a good cross check, and/or try out another USB wifi adaptor (if you have)
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Old 1st January 2010
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http://en.wikipedia.org/wiki/Mac_Mini

Was just reading that, i have had 6 Apple's in my stretch only one was a PPC though, and that was a 120mhz, back when dinosaurs invented lasers , i did not have a chance to try out PPC arch, most of my installs on my macbooks were Intel based.

I am hoping that you have another USB adaptor, or can at least test this current one on a Windoz box and verify. I am at a bit off a loss with your situation and am starting to believe that it is hardware or driver issue.

Hehe was just having a laugh thinking about how nice it would be if i could setup my ipod with OpenBSD and try to create an access point maybe one day Jobs will have the incentive to creep into that type of "market"
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Old 1st January 2010
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I'm currently downloading the drivers and will test the adapter on another intel Mac....
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Old 1st January 2010
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Code:
an 01 12:27:18.772553 rule 141/(match) block in on rum0: 192.168.2.101.51276 > 192.168.2.255.137: udp 50
Jan 01 12:27:19.040897 rule 141/(match) block in on rum0: 192.168.2.101.51276 > 192.168.2.255.137: udp 50
Jan 01 12:27:19.999965 rule 141/(match) block in on rum0: 192.168.2.101.57817 > 192.168.2.254.192: udp 4
Jan 01 12:27:20.498712 rule 141/(match) block in on rum0: 192.168.2.101.55357 > 192.168.2.254.192: udp 4
Your firewall is blocking port 137, which is OK
Code:
$ grep 137 /etc/services
netbios-ns      137/tcp                         # NETBIOS Name Service
netbios-ns      137/udp
However port 192 seems to be used by Apple wireless stuff. See http://isc.sans.org/port.html?port=192.
Code:
Protocol	Service	Name
tcp	osu-nms	OSU Network Monitoring System
udp	osu-nms	OSU Network Monitoring System
And
Quote:
Port 192 UDP used by Apple AirPort Base Station PPP status or discovery (certain configurations), AirPort Admin Utility, AirPort Express Assistant Reference: http://support.apple.com/kb/TS1629
So blocking this might not be such a good idea
Add a rule to allow this port 192 traffic, and see whether that helps.
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Old 1st January 2010
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Cool, it might show something that was not quite visible before, i too am checking out the openbsd-ppc mailing list for something, yes i can not sleep and am quite bored so here i am...
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Old 1st January 2010
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Quote:
Ok. This seems to be all kind of traffic generated when I'm connecting my apple notebook without any encryption:
Is apparently when he was getting the blocked to port 192 messages, later on he states;

Quote:
I'm allowing any traffic on rum0 (the wifi interface) and that's what happening.
Quote:
Jan 01 12:47:16.736765 rule 11/(match) pass in on rum0: 192.168.2.101.52823 > 192.168.2.254.192: udp 4
Which seems to be fine, he said he was passing all traffic through, and logging it, i could be tired and not proccessing (mentally) properly .
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