Re: slow connections to non-bridged hostapd/dnsmasq wireless access point (was pointers to material...)
On Wed, Jun 14, 2017 at 9:39 AM, Dan Ritter <dsr@randomstring.org> wrote:
> On Wed, Jun 14, 2017 at 07:40:49AM +0900, Joel Rees wrote:
>> (Now that I'm awake...)
>>
>> On Wed, Jun 14, 2017 at 2:18 AM, Joel Rees <joel.rees@gmail.com> wrote:
>> > On Tue, Jun 13, 2017 at 9:26 PM, Dan Ritter <dsr@randomstring.org> wrote:
>> >> On Tue, Jun 13, 2017 at 11:55:11AM +0900, Joel Rees wrote:
>> >>> On Tue, Jun 13, 2017 at 9:30 AM, Dan Ritter <dsr@randomstring.org> wrote:
>> >>> > On Mon, Jun 12, 2017 at 11:50:00AM +0900, Joel Rees wrote:
>> >>> >> (famous last words)
>> >>> >>
>> >>> >> On Sat, Jun 10, 2017 at 3:53 PM, Joel Rees <joel.rees@gmail.com> wrote:
>> >>> >> > I now have connection for both the wireless and the netbook that is acting
>> >>> >> > as the AP. I took out the bridge entirely, quit trying to play with
>> >>> >> > port forwarding,
>> >>> >> > just used dead simple setup. dnsmasq was the only missing piece, if I had
>> >>> >> > not been focusing on bridging. Bridging is probably for the other direction.
>> >>> >> >
>> >>> >> > But the wireless is pretty slow, so I'm not sure I'm finished.
>> >>> >> >
>> >>> >> > I have to go take care of some family business, when I'm done I'll
>> >>> >> > post the details.
>> >>> >> >
>> >>> >> > But it's really pretty simply. I was just working too hard.
>> >>> >>
>> >>> >> But it's too slow to maintain a connection.
>> >>> >>
>> >>> >> After mucking around a bit, I haven't really come up with anything. So
>> >>> >> I'll post my
>> >>> >> configurations (names changed as usual):
>> >>> >
>> >>> > You have an eth0 network, a non-overlapping wlan0 network -- can
>> >>> > you characterize "too slow"?
>> >>>
>> >>> Actually, now that I dig in, it only seems to be routing dns traffic.
>> >>>
>> >>> That is, I tried to ping the wireless interface from my daughter's computer
>> >>> and got a network not reachable or down result of some sort. (I didn't
>> >>> write the exact message down, and my daughter's at school so I can't
>> >>> use her computer.)
>> >>>
>> >>> But my logs on the netbook that is running hostapd and dnsmasq show
>> >>> quite a bit of dns traffic, lots of queries returning successful results.
>> >>>
>> >>> > Things to check:
>> >>> >
>> >>> > - ping from your netbook to the outside world
>> >>>
>> >>> No problem there.
>> >>>
>> >>> > - ping from a wifi client through the netbook to the outside
>> >>> > world
>> >>>
>> >>> That also got network not reachable or down or something.
>> >>>
>> >>> > if those work,
>> >>> >
>> >>> > - wget -O /dev/null http://speed.hetzner.de/100MB.bin
>> >>> > - and on a wifi client
>> >>>
>> >>> I tried that in bridge configuration just now and I'm only getting one
>> >>> percent every twenty to thirty seconds. The non-bridged configuration
>> >>> doesn't even read the mail to look at the url.
>> >>>
>> >>
>> >> Right, that's bad.
>>
>> Actually, it might be normal for this ancient Android tablet.
>>
>> >> Try this:
>> >>
>> >> allow-hotplug eth0
>> >> iface eth0 inet static
>> >>
>> >> allow-hotplug wlan0
>> >> iface wlan0 inet static
>> >>
>> >> auto br0
>> >> iface br0 inet static
>> >> address 172.28.45.58
>> >> netmask 255.255.255.192
>> >> broadcast 172.28.45.63
>> >> gateway 172.28.45.32
>> >> dns-nameservers 172.28.45.32 208.67.222.222 8.8.4.4
>> >> bridge_ports eth0 wlan0
>> >> bridge_maxwait 1
>> >>
>> >>
>> >> Note that now both the eth0 and wlan0 interfaces will have the same
>> >> 172.28.45.58 address
>> >>
>> >> But for right now, ignore that: just test connectivity and speed on this
>> >> netbook while the bridge is in effect.
>> >
>> > Interesting. Without the alias on eth0, the netbook is now able to access
>> > the internet through the bridged eth0 port. This is beginning to make
>> > more sense to me.
>> >
>> > Speed on your 100Mb blob is reasonable, ETA of about two minutes
>> > and 40 seconds, which is close to the limit on my connection.
>> >
>> > Wireless devices are not able to log in. I'm not sure I got the changes
>> > to the dnsmasq and ntp configurations right for doing a subrange of
>> > what I have the wall router providing me.
>>
>> I forgot the most important setting.
>>
>> Setting hostapd to bridge mode solved the connection problem.
>>
>> It's still running about 20 seconds per megabyte, which may be all I
>> want to expect from this ancient single-processor 32-bit ARM
>> Android 2.4 tablet with only 1G RAM and an 80%-90% full 8G internal
>> flash.
>>
>> I'll try a connection on one of my kids' computers later.
>>
>> >> If you can't get a good approximation of your internet
>> >> connection speed from this, there's more to track down.
>> >>
>> >> -dsr-
>> >
>> > This is something I can play with after I wake up tomorrow. (It's about
>> > two in the morning here and I need to get some sleep.)
For the record, the speed problem somehow resolved itself.
I don't know how, but I'm guessing that, after a couple of re-boots,
networkmanager figured out how to get itself out of the way.
Or maybe it was just one reboot and my efforts to setup dns became
moot. If I had time, I'd try to figure out a real setting, but I need to
focus on the novel I'm trying to write. (And my son went out and
bought a new wireless router, which is now not misbehaving, but
since he's supposed to be graduating with a degree in computer
networking pretty soon, I'm leaving that up to him. ;)
Thanks again for the help.
--
Joel Rees
One of these days I'll get someone to pay me
to design a language that combines the best of Forth and C.
Then I'll be able to leap wide instruction sets with a single #ifdef,
run faster than a speeding infinite loop with a #define,
and stop all integer size bugs with my bare cast.
http://defining-computers.blogspot.com/2017/06/reinventing-computers.html
More of my delusions:
http://reiisi.blogspot.com/2017/05/do-not-pay-modern-danegeld-ransomware.html
http://reiisi.blogspot.jp/p/novels-i-am-writing.html
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