From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wr1-x42c.google.com (mail-wr1-x42c.google.com [IPv6:2a00:1450:4864:20::42c]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id 8180A3CB67 for ; Thu, 14 Mar 2019 14:56:04 -0400 (EDT) Received: by mail-wr1-x42c.google.com with SMTP id k1so6539737wre.1 for ; Thu, 14 Mar 2019 11:56:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=heistp.net; s=google; h=from:message-id:mime-version:subject:date:in-reply-to:cc:to :references; bh=R+USe9WztDkmAP+MAoBI7ZyZbXW6L5QvSZfz8Tscy+w=; b=htKMq/MDaKbteQoA5ZGSptD+8umvs7vnhm4+mgWUioCKmxpn/erEFnHrn0a3EhbJBq W9OB4HYGvDMnUCZt4mLTMFhulmyOEkyn+01ji0ZlTIzyFb/VV3Icn4rv9DKSWDI/4Nj0 xcF76BVfyWzxX/cju9wwFXRvKXv0WnEjmklMCKeqSLjIco9/heGEIYt3IzecvPMBV6BZ 2X+uAK3Jipby0wbuLyZR8LfLi1oG02deDDTnyFI9Kp1vLVCY/LdYRgbilTqtg/rW2nnq IKEMHAaMVcxUeACEufLWe7EOZwmUEIpb1ZvSKgjd61VLYMMBCNFjCfozGm66283yzTvq i8UQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:message-id:mime-version:subject:date :in-reply-to:cc:to:references; bh=R+USe9WztDkmAP+MAoBI7ZyZbXW6L5QvSZfz8Tscy+w=; b=DFHC7rWl5G18+yavjSBcxfPbWWactywvdgoCGdE+1fuHJddM+B02P+lKBSN2fKgnTC qKQ7iiPLEajvpLdyVbvUs1JxwnK1v0BR5GCWCJQ92TulEGXhrY0wOThi/Xn+NBrDWHPu CgyUQyKUpTgPI5gXWxqsyVIHytNZi1Jv1W/FCyDlCFMUA+o825JnCX9hvrxtCcfYRMsb mifmeziUEfzWnY8RkN/gajvKw4wywDbOXPqrttuADEbhJ6L9K8FjIb7R5sgnLZG4m3Je 4MClOjak1ibiIgwM41lNvPBYbi2KtWv7xn1EORm57E6viFoNOsidgSGB/jxVCpjVG/+E qwOA== X-Gm-Message-State: APjAAAVOu4G85vqYBeUZP6Zi0MG39gwm8h5LdbAAn2VCczP95o86/mxg JB45pS6Fwhm3fOZ2IOaIpaVqLQ== X-Google-Smtp-Source: APXvYqznnJWb5YSpb4BSB3sCpDg8XYhEg1Tuzz+9GfPSpiDIAnnfoIl/Z86nGxT0vTLRZ3LkjXBhhQ== X-Received: by 2002:adf:f4c8:: with SMTP id h8mr35205915wrp.6.1552589763513; Thu, 14 Mar 2019 11:56:03 -0700 (PDT) Received: from tron.luk.heistp.net (h-1169.lbcfree.net. [185.193.85.130]) by smtp.gmail.com with ESMTPSA id z10sm3053508wml.39.2019.03.14.11.56.01 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 14 Mar 2019 11:56:02 -0700 (PDT) From: Pete Heist Message-Id: Content-Type: multipart/alternative; boundary="Apple-Mail=_D5C740A0-B9F4-4CE5-9AC5-BC9AC8AF1023" Mime-Version: 1.0 (Mac OS X Mail 11.5 \(3445.9.1\)) Date: Thu, 14 Mar 2019 19:56:00 +0100 In-Reply-To: Cc: Cake List , cerowrt-devel To: Dave Taht References: X-Mailer: Apple Mail (2.3445.9.1) Subject: Re: [Cake] looking for some testers this week X-BeenThere: cake@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: Cake - FQ_codel the next generation List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 14 Mar 2019 18:56:04 -0000 --Apple-Mail=_D5C740A0-B9F4-4CE5-9AC5-BC9AC8AF1023 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 > On Mar 13, 2019, at 12:20 AM, Dave Taht wrote: >=20 > only 225/8-231/8 are opened up from the relevant reserved for > multicast space by this patch series. They have always been unassigned > addresses. I did not change the userspace IN_MULTICAST macro, but > nearly nothing in userspace checks that. So, for ar71xx generic om2p, I=E2=80=99m able to set up an AP/router = with IP 225.1.2.1: root@uniextap:~# ip addr show br-lan 8: br-lan: mtu 1500 qdisc noqueue = state UP qlen 1000 link/ether ac:86:74:10:26:30 brd ff:ff:ff:ff:ff:ff inet 225.1.2.1/24 brd 225.1.2.255 scope global br-lan valid_lft forever preferred_lft forever and pick up a DHCP address in that subnet from an STA: root@uniextsta:~# ip addr show wlan0 5: wlan0: mtu 1500 qdisc noqueue state = UP qlen 1000 link/ether ac:86:74:03:0d:f2 brd ff:ff:ff:ff:ff:ff inet 225.1.2.120/24 brd 225.1.2.255 scope global wlan0 valid_lft forever preferred_lft forever inet6 fe80::ae86:74ff:fe03:df2/64 scope link=20 valid_lft forever preferred_lft forever and NAT traffic on that subnet to the Internet: root@uniextsta:~# ping 8.8.8.8 PING 8.8.8.8 (8.8.8.8): 56 data bytes 64 bytes from 8.8.8.8: seq=3D0 ttl=3D56 time=3D11.562 ms 64 bytes from 8.8.8.8: seq=3D1 ttl=3D56 time=3D12.722 ms root@uniextap:~# tcpdump -i eth1 icmp tcpdump: verbose output suppressed, use -v or -vv for full protocol = decode listening on eth1, link-type EN10MB (Ethernet), capture size 262144 = bytes 18:50:32.290616 IP uniextap.lan > google-public-dns-a.google.com: ICMP = echo request, id 1252, seq 0, length 64 18:50:32.300259 IP google-public-dns-a.google.com > 10.72.0.37: ICMP = echo reply, id 1252, seq 0, length 64 18:50:33.291222 IP uniextap.lan > google-public-dns-a.google.com: ICMP = echo request, id 1252, seq 1, length 64 18:50:33.302339 IP google-public-dns-a.google.com > 10.72.0.37: ICMP = echo reply, id 1252, seq 1, length 64 Tires kicked. Anything else?= --Apple-Mail=_D5C740A0-B9F4-4CE5-9AC5-BC9AC8AF1023 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8

On Mar 13, 2019, at 12:20 AM, = Dave Taht <dave.taht@gmail.com> wrote:

only 225/8-231/8 are opened up = from the relevant reserved for
multicast space by this patch series. They have always been = unassigned
addresses. I = did not change the userspace IN_MULTICAST macro, but
nearly nothing in userspace = checks that.

So, = for ar71xx generic om2p, I=E2=80=99m able to set up an AP/router with IP = 225.1.2.1:

root@uniextap:~# ip addr show br-lan
8: br-lan: = <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP = qlen 1000
    link/ether ac:86:74:10:26:30 brd = ff:ff:ff:ff:ff:ff
    inet 225.1.2.1/24 brd = 225.1.2.255 scope global br-lan
      =  valid_lft forever preferred_lft forever

and = pick up a DHCP address in that subnet from an STA:

root@uniextsta:~# ip addr show wlan0
5: wlan0: = <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP = qlen 1000
    link/ether ac:86:74:03:0d:f2 brd = ff:ff:ff:ff:ff:ff
    inet 225.1.2.120/24 brd 225.1.2.255 scope = global wlan0
       valid_lft forever preferred_lft = forever
    inet6 fe80::ae86:74ff:fe03:df2/64 scope = link 
       valid_lft forever preferred_lft = forever

and = NAT traffic on that subnet to the Internet:

root@uniextsta:~# ping = 8.8.8.8
PING 8.8.8.8 (8.8.8.8): 56 data = bytes
64 bytes from 8.8.8.8: seq=3D0 ttl=3D56 = time=3D11.562 ms
64 bytes from 8.8.8.8: seq=3D1 = ttl=3D56 time=3D12.722 ms

root@uniextap:~# = tcpdump -i eth1 icmp
tcpdump: = verbose output suppressed, use -v or -vv for full protocol = decode
listening on eth1, link-type EN10MB = (Ethernet), capture size 262144 bytes
18:50:32.290616= IP uniextap.lan > google-public-dns-a.google.com: ICMP echo request, id = 1252, seq 0, length 64
18:50:32.300259 IP google-public-dns-a.google.com > 10.72.0.37: ICMP echo = reply, id 1252, seq 0, length 64
18:50:33.291222 = IP uniextap.lan > google-public-dns-a.google.com: ICMP echo request, id = 1252, seq 1, length 64
18:50:33.302339 IP google-public-dns-a.google.com > 10.72.0.37: ICMP echo = reply, id 1252, seq 1, length 64

Tires kicked. Anything = else?
= --Apple-Mail=_D5C740A0-B9F4-4CE5-9AC5-BC9AC8AF1023--