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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
<br> the Automatic Bug Reporting Tool and an Update
<br> I've already learned that it expects me to click and swipe up like an iPhone, so I do that
<br> and they appear in the middle of the screen in a transparent window
<br> I didn't know what to do, so I clicked one
<br> that made it disappear
<br> all I know is that the automatic bug reporter was concerned about Firefox, but Firefox hadn't crashed
<br> Firefox does have a lot of bugs though
<br> aha! it sent a mail to root
<br> 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
<br> i think interest of small providers doing anycast is growing.
<br> 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
<br> <u>acf_</u>: 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
<br> /etc/radvd.conf
mnathani_: thanks
acf_: <u>mnathani_</u>: I'm guessing your client boxen are still mtu 1500..
<br> are you having any trouble accessing Google services?
mercutio: you should definitely clamp
mnathani_: not really using this setup for any real users
<br> mainly testing vms and cisco devices
<br> I really should document the v6 over a v4 tunnel
<br> can radvd provide ipv6 default gateway
acf_: yes
<br> 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
<br> is it necessary to set the mtu on each host, or only the host terminating the vpn?
acf_: <u>mnathani_</u>: if path mtu discovery works, just on your VPN endpoint interfaces
<br> but Google doesn't appear to handle PMTUD correctly, at least for IPv6
<br> so you'd need to set the MTU on all of the hosts
mnathani_: in some tests I got upto 1402
<br> other tests 1452
<br> probably safe to set mtu to something like 1410
acf_: yea
<br> I use 1400 on mine, just to play it safe
mnathani_: does that set ipv4 and ipv6 at the same time?
<br> or can you set them independently?
acf_: on Linux, that's the interface MTU
<br> for all protocols
<br> 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
<br> 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_: <u>brycec</u>: gotcha
brycec: It's not likely to have any /real/ impact on your speed though.
mercutio: it might for bittorrent
<br> but not for normal traffic
<br> 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
<br> so that's 72 bytes..
<br> oh right
<br> i would say not really depending on your system
<br> coalescing mostly fixes it.
mnathani_: @google coalescing
BryceBot: 197,000 total results returned for 'coalescing', here's 3
<br> 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 for ...
<br> 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.
<br> 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_: <u>brycec</u>: pipe is definitely less that 100meg
<br> 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
<br> is that with the double build thing
RandalSchwartz: only one process
<br> and whatever freebsd does out of the box
<br> it seems faster than before.
<br> 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.
<br> I should just uninstall it and see if anything complains. :)
mercutio: i tried using gentoo years back
<br> 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
<br> it was pretty awesome
mercutio: i am finding arch ok
RandalSchwartz: yeah - the talks aren't archived online yet
<br> I'm building packages at 730/hour :)
mnathani_: anyone pay for dropbox storage?