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mkb: so I sit down at my CentOS desktop and find that it's calmoring to tell me about some notifications it's made up in my absence
the Automatic Bug Reporting Tool and an Update
I've already learned that it expects me to click and swipe up like an iPhone, so I do that
and they appear in the middle of the screen in a transparent window
I didn't know what to do, so I clicked one
that made it disappear
all I know is that the automatic bug reporter was concerned about Firefox, but Firefox hadn't crashed
Firefox does have a lot of bugs though
aha! it sent a mail to root
but it says firefox crashed and it was still there...
mike-burns: Quantum crashing. It's both crashed and not crashed at the same time.
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milki: but mkb is clearly observing it
grody: it changed it's state as he did
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brycec: *its
grody: spell check is a pita
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mercutio: hmm people were talking about arp on nanog
staticsafe: indeed
mercutio: bgp+routed ip
i think interest of small providers doing anycast is growing.
and atm it seems easiest to use different providers which is kind of a pita
staticsafe: i have PI space but no AS yet so no BGP for me yet
mercutio: just a /24?
staticsafe: yes and a v6 /48
mercutio: oh yip
mnathani_: so.. I managed to get openvpn to provide ipv6 connectivity via a v4 tunnel
mercutio: nice
mnathani_: now I am having issues getting Router Advertisements to work on a Linux box to provide addressing to LAN hosts
acf_: using radvd?
mnathani_: static IPv6 addressing works for hosts behind the tunnel too so thats cool
acf_: I guess thats what I was looking for, wasn't sure what it was called
acf_: this is my config: http://paste.unixcube.org/k/96bcb8
/etc/radvd.conf
mnathani_: thanks
acf_: mnathani_: I'm guessing your client boxen are still mtu 1500..
are you having any trouble accessing Google services?
mercutio: you should definitely clamp
mnathani_: not really using this setup for any real users
mainly testing vms and cisco devices
I really should document the v6 over a v4 tunnel
can radvd provide ipv6 default gateway
acf_: yes
that configuration does ^
mnathani_: you are right. It was a dns / ipv4 issue
acf_: I think radvd can do IPv6 DNS
mnathani_: 1452 is the highest packet size I can ping google with
is it necessary to set the mtu on each host, or only the host terminating the vpn?
acf_: mnathani_: if path mtu discovery works, just on your VPN endpoint interfaces
but Google doesn't appear to handle PMTUD correctly, at least for IPv6
so you'd need to set the MTU on all of the hosts
mnathani_: in some tests I got upto 1402
other tests 1452
probably safe to set mtu to something like 1410
acf_: yea
I use 1400 on mine, just to play it safe
mnathani_: does that set ipv4 and ipv6 at the same time?
or can you set them independently?
acf_: on Linux, that's the interface MTU
for all protocols
I remember setting the MTU on Windows, and I think you might be able to do it per protocol
mnathani_: I guess I could try and set separate interface for v4 and v6
s/set/use
BryceBot: <mnathani_> I guess I could try and use separate interface for v4 and v6
brycec: (In theory, 1280 is the "safest bet" for ipv6 mtu, it's the minimum)
mnathani_: does mtu have an impact on maximum speed attainable on say a speed test?
brycec: Yes insomuch as it requires a higher packet rate to achieve the same bandwidth.
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mnathani_: brycec: gotcha
brycec: It's not likely to have any /real/ impact on your speed though.
mercutio: it might for bittorrent
but not for normal traffic
well not much
brycec: And not on <100mbps pipes
mercutio: well ipv6 does increase overhead
brycec: But if you're trying to sustain 1gbps for instance, then you start to care about your PPS a lot more.
mercutio: 40 bytes for ip header, 20 bytes for tcp/ip, 12 bytes with tcp options
so that's 72 bytes..
oh right
i would say not really depending on your system
coalescing mostly fixes it.
mnathani_: @google coalescing
BryceBot: 197,000 total results returned for 'coalescing', here's 3
Null coalescing operator - Wikipedia, the free encyclopedia (http://en.wikipedia.org/wiki/Null_coalescing_operator) The null coalescing operator (called the Logical Defined-Or operator in Perl, Elvis -operator in Groovy and Kotlin) is a binary operator that is part of the syntax forĀ ...
PHP RFC: Null Coalesce Operator (https://wiki.php.net/rfc/isset_ternary) Sep 6, 2014 ... The coalesce, or ?? , operator is added, which returns the result of its first operand if it exists and is not NULL, or else its second operand.
optimization - Coalesce function for PHP? - Stack Overflow (http://stackoverflow.com/questions/1013493/coalesce-function-for-php) Many programming languages have a coalesce function (returns the ... There is a new operator in php 5.3 which does this: ?: // A echo 'A' ?
mnathani_: brycec: pipe is definitely less that 100meg
s/that/than
BryceBot: <mnathani_> brycec: pipe is definitely less than 100meg
RandalSchwartz: nice... gcc built in 31 minutes on SSD. :)
mercutio: that seems like a long time
is that with the double build thing
RandalSchwartz: only one process
and whatever freebsd does out of the box
it seems faster than before.
we're live on the SSD now
mercutio: gcc used to compile itself with itself after compiling itself with the system compiler
RandalSchwartz: yeah, I think it did that
mercutio: i haven't compiled it in years
RandalSchwartz: now I'm building ffmpeg, and I can't figure out what needs it.
I should just uninstall it and see if anything complains. :)
mercutio: i tried using gentoo years back
gnome took hours to buiild
RandalSchwartz: "gentoo - for those times when your life isn't slow enough..."
mercutio: it seemed like a good idea at the time
RandalSchwartz: there was a lightning talk at SCaLE about picking a linux distro
it was pretty awesome
mercutio: i am finding arch ok
RandalSchwartz: yeah - the talks aren't archived online yet
I'm building packages at 730/hour :)
mnathani_: anyone pay for dropbox storage?