The real solution to run ContainerLAB on MAC m1 or m2 apple silicon

Step 1: Install Canonical Multipass your MAC 

$brew install multipass

Step 2: Install the VM called docker

$multipass launch docker --name mydocker

Step 3: Connect to the new VM

$multipass shell mydocker

Step 4: Inside the VM install ContainerLab

$sudo su

#bash -c "$(curl -sL https://get.containerlab.dev)"

Let's try this simple back2back topology of two Linux computers with FRR

-- 2-frr-back2back.yml --

name: ipv6-ws

topology:

   kinds:

     linux:

       image: ghcr.io/hellt/network-multitool

   do not give:

   ROUTERS ###

     A1:

       kind: linux

       image: quay.io/frrouting/frr:8.4.1

       exec:

         - "sysctl -w net.ipv6.conf.all.forwarding=1"

         - "ip address add dev eth1 2001:db8:ffab::1/64"

     A2:

       kind: linux

       image: quay.io/frrouting/frr:8.4.1

       exec:

         - "ip address add dev eth1 2001:db8:ffab::2/64"

         - "sysctl -w net.ipv6.conf.all.forwarding=1"

   links:

     - endpoints: ["R1:eth1", "R2:eth1"]

--- yml --

Step 5: Let's build the topology with clab:

clab dep -t 2-frr-back2back.yml

Step 6: finally we are going to connect to one of the VMs inside ContainerLAB

docker exec -i -t clab-ipv6-ws-R2 bash

How to uninstall brew in MAC

How to uninstall brew in MAC

  Option 1: 

/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/uninstall.sh)"

 Option 2: 

NONINTERACTIVE=1 /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/uninstall.sh)"

Tomado de: https://github.com/homebrew/install#uninstall-homebrew

Strange ssh behavior on MAC - Copy/Paste Issues

 Situation:

   Strange behavior of SSH on MAC, problems with copy/paste in terminal during ssh. Does the clipboard work in other applications?

Solution:

   At least in "vi" the solution is very simple. Edit the file: ~/.vimrc and paste the following content:

if !has("gui_running")

   set mouse=

endif

Luck!

Solved: Finder on MAC does not find any files in its searches

Problem:

   Finder can't find files when searching.

Solution:

   I know there are many solutions, many with spotlight in system preferences, but the one that worked for me was to open a terminal window and run/execute:

  #sudo mdutil -E /

    I hope this is useful

My humble results. Testing ping to loopback using v4 and v6

Hello there,
  Regarding RTT v4 vs v6 I did something "interesting" recently, would like to know your thoughs.
  If you ping6 your loopback (let´s say 1000 packets) interface with Windows or Linux, v6 is faster.
  Now try the same on MAC (El capitan for example).., v6 is 20-25% slower.
  I did the above with many devices (and asked some friends) and the behavior was pretty much the same.


MAC:
--- 127.0.0.1 ping statistics ---
100 packets transmitted, 100 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 0.037/0.098/1.062/0.112 ms
--- ::1 ping6 statistics ---
100 packets transmitted, 100 packets received, 0.0% packet loss
round-trip min/avg/max/std-dev = 0.058/0.120/0.194/0.027 ms



Linux:
--- 127.0.0.1 ping statistics ---
100 packets transmitted, 100 received, 0% packet loss, time 98999ms
rtt min/avg/max/mdev = 0.015/0.021/0.049/0.007 ms

--- ::1 ping statistics ---
100 packets transmitted, 100 received, 0% packet loss, time 99013ms
rtt min/avg/max/mdev = 0.019/0.031/0.040/0.004 ms


Windows 10:

Ping statistics for ::1:
    Packets: Sent = 100, Received = 100, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 0ms, Maximum = 0ms, Average = 0ms


Ping statistics for 127.0.0.1:
    Packets: Sent = 100, Received = 100, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 0ms, Maximum = 4ms, Average = 0ms


Bye,


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