Re: FSO Wifi - can ping but cannot download
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Somebody in the thread at some point said: | I've configured WiFi on a fresh FSO image the same way I had on a 2008.2 | image--by creating a wpa_supplicant.conf file and editing | /etc/network/interfaces. This configuration worked on the 2008.2 image | but when I try implementing it on an FSO image, I cannot download | anything. I can ping sites and when using wget, I can connect to them, | but downloading never commences. It's not a DNS issue because ping and | wget seem to be able to resolve correctly. Any thoughts? Sounds specific to tcp transport, ping is ICMP and DNS usually UDP. Maybe connect to a local Linux box and run tcpdump on there to study what it sees from the connection action. - -Andy -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org iEYEARECAAYFAkiWtaIACgkQOjLpvpq7dMrP8gCeNKkUgdWpiNNnrLXDD1shVpwJ /FUAn0WZPY4IHJjjrERd8Ywr9yX+DGDL =J4Ke -END PGP SIGNATURE- ___ support mailing list support@lists.openmoko.org https://lists.openmoko.org/mailman/listinfo/support
Re: FSO Wifi - can ping but cannot download
Andy Green escreveu: Somebody in the thread at some point said: | I've configured WiFi on a fresh FSO image the same way I had on a 2008.2 | image--by creating a wpa_supplicant.conf file and editing | /etc/network/interfaces. This configuration worked on the 2008.2 image | but when I try implementing it on an FSO image, I cannot download | anything. I can ping sites and when using wget, I can connect to them, | but downloading never commences. It's not a DNS issue because ping and | wget seem to be able to resolve correctly. Any thoughts? Sounds specific to tcp transport, ping is ICMP and DNS usually UDP. Maybe connect to a local Linux box and run tcpdump on there to study what it sees from the connection action. No, it's not ping and DNS do not use TCP. It's ping and DNS and TCP SYN are small packets, data transfer is large packets, i.e. PMTU blackhole. I've seen that thing happen way too many times, and the workaround is almost always a MSS clamp (which is an ugly but unfortunately necessary hack). -- Cesar Eduardo Barros [EMAIL PROTECTED] [EMAIL PROTECTED] ___ support mailing list support@lists.openmoko.org https://lists.openmoko.org/mailman/listinfo/support
Re: FSO Wifi - can ping but cannot download
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Somebody in the thread at some point said: | Andy Green escreveu: | Somebody in the thread at some point said: | | I've configured WiFi on a fresh FSO image the same way I had on a 2008.2 | | image--by creating a wpa_supplicant.conf file and editing | | /etc/network/interfaces. This configuration worked on the 2008.2 image | | but when I try implementing it on an FSO image, I cannot download | | anything. I can ping sites and when using wget, I can connect to them, | | but downloading never commences. It's not a DNS issue because ping and | | wget seem to be able to resolve correctly. Any thoughts? | | Sounds specific to tcp transport, ping is ICMP and DNS usually UDP. | Maybe connect to a local Linux box and run tcpdump on there to study | what it sees from the connection action. | | No, it's not ping and DNS do not use TCP. It's ping and DNS and TCP | SYN are small packets, data transfer is large packets, i.e. PMTU | blackhole. I've seen that thing happen way too many times, and the | workaround is almost always a MSS clamp (which is an ugly but | unfortunately necessary hack). Well, he says it worked on some other image. The guy can test this by seeing if he has any bulk transfer with local machines on his side of his router. He can also mess with his ping payload size and confirm if that controls the issue... # ping -s 4096 192.168.0.1 PING 192.168.0.1 (192.168.0.1) 4096(4124) bytes of data. 4104 bytes from 192.168.0.1: icmp_seq=1 ttl=64 time=5.36 ms - -Andy -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org iEYEARECAAYFAkiW5ZUACgkQOjLpvpq7dMoHgACeK6w6rX+tMzVLnl50113lHjL2 wTMAn2KI6JMwBAWgJj1JV4EXOHGIguVz =687x -END PGP SIGNATURE- ___ support mailing list support@lists.openmoko.org https://lists.openmoko.org/mailman/listinfo/support
Re: FSO Wifi - can ping but cannot download
I can wget files hosted on the local side of the router, cannot wget anything external. ping -s 4096 192.168.1.1 still works. did you check your firewall/iptables setup and/or that mss clamp proposed? ___ support mailing list support@lists.openmoko.org https://lists.openmoko.org/mailman/listinfo/support
Re: FSO Wifi - can ping but cannot download
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Somebody in the thread at some point said: | I can wget files hosted on the local side of the router, cannot wget | anything external. ping -s 4096 192.168.1.1 http://192.168.1.1 still | works. Props to Cesar then, looks like he had the right idea. - -Andy -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org iEYEARECAAYFAkiXBDEACgkQOjLpvpq7dMplfwCcCSx9DR5UV2tGY8BF5t9UumYE Q2YAnjxJ4yYfpAypSeto/hWSKI4HoDZM =LbYl -END PGP SIGNATURE- ___ support mailing list support@lists.openmoko.org https://lists.openmoko.org/mailman/listinfo/support
Re: FSO Wifi - can ping but cannot download
On Sun, 3 Aug 2008, Dylan Semler wrote: I've configured WiFi on a fresh FSO image the same way I had on a 2008.2 image--by creating a wpa_supplicant.conf file and editing /etc/network/interfaces. This configuration worked on the 2008.2 image but when I try implementing it on an FSO image, I cannot download anything. I can ping sites and when using wget, I can connect to them, but downloading never commences. It's not a DNS issue because ping and wget seem to be able to resolve correctly. Any thoughts? Are you, by any chance, connected to the Internet over DSL? Can you try: ifconfig $DEVICE mtu 1200 on the FreeRunner? (Set $DEVICE to usb0, I think.) If that works, then the issue is probably MTU-related, and others can help you figure things out from there. It's safe to try even if the problem is not this, and the setting will disappear at the next reboot at the latest. -- Asheesh. -- Where's the Coke machine? Tell me a joke!! ___ support mailing list support@lists.openmoko.org https://lists.openmoko.org/mailman/listinfo/support
Re: FSO Wifi - can ping but cannot download
On Mon, Aug 4, 2008 at 11:40 AM, macebre [EMAIL PROTECTED] wrote: hi had the same problem with the ASU image. Another (second or third?) udhcpc in the Terminal did it for me. Thanks for the suggestion but that didn't work -- Dylan Type faster. Use Dvorak: http://dvzine.org ___ support mailing list support@lists.openmoko.org https://lists.openmoko.org/mailman/listinfo/support
Re: FSO Wifi - can ping but cannot download
On Mon, Aug 4, 2008 at 5:46 AM, Cesar Eduardo Barros [EMAIL PROTECTED]wrote: Andy Green escreveu: Sounds specific to tcp transport, ping is ICMP and DNS usually UDP. Maybe connect to a local Linux box and run tcpdump on there to study what it sees from the connection action. No, it's not ping and DNS do not use TCP. It's ping and DNS and TCP SYN are small packets, data transfer is large packets, i.e. PMTU blackhole. I've seen that thing happen way too many times, and the workaround is almost always a MSS clamp (which is an ugly but unfortunately necessary hack). Well internet is working now, I'm still not sure what was wrong though. I got a bit of help about MSS clamp[1] and tried the following commands from my router: # nvram set ppp_mtu=1492 # nvram commit # reboot upon reboot of the router I verified that it worked: # nvram show | grep mtu pptpd_client_mtu=1450 mtu_enable=0 size: 25395 bytes (7373 left) pptpd_client_srvmtu=1450 wan_mtu=1500 ppp_mtu=1492 but internet still didn't work. I then started stabbing in the dark, trying nvram set wan_mtu=1492 and nvram set mtu_enable=1. Those changes didn't seem to take hold (according to nvram show) so I set them back to 1500 and 0 and rebooted. When the router came back online the internet was working on my Freerunner. I then set ppp_mtu=1500 to verify that that was the issue, and my Freerunner still worked. So now I'm not hacking an MSS clamp and the internet seems to be working. Maybe the router just needed to be restarted a few times. Thanks for all of your help. [1] http://forum.openwrt.org/viewtopic.php?id=5662 -- Dylan Type faster. Use Dvorak: http://dvzine.org ___ support mailing list support@lists.openmoko.org https://lists.openmoko.org/mailman/listinfo/support
FSO Wifi - can ping but cannot download
I've configured WiFi on a fresh FSO image the same way I had on a 2008.2 image--by creating a wpa_supplicant.conf file and editing /etc/network/interfaces. This configuration worked on the 2008.2 image but when I try implementing it on an FSO image, I cannot download anything. I can ping sites and when using wget, I can connect to them, but downloading never commences. It's not a DNS issue because ping and wget seem to be able to resolve correctly. Any thoughts? -- Dylan Type faster. Use Dvorak: http://dvzine.org ___ support mailing list support@lists.openmoko.org https://lists.openmoko.org/mailman/listinfo/support
