If I understand the question, the problem is : when restarting a container connected to multiple bridges, how to prefer a bridge to use for default route ? I searched available options and made some tests, I did not found any docker command line option to specify a default route or to prefer a bridge … Read more
The part after the slash is how many subnet mask bits to use. Since the use of classless routing you use slash instead of saying class A or B whatever. Example: 192.168.1.1/24 is 192.168.1.1 255.255.255.0 255.255.255.0 is using 24 of the 32 bits to create the subnet. in binary it looks like this: 11111111.11111111.11111111.00000000 so … Read more
When you run WSL-2, a machine like a vitural machin run on your window device. Windows will create a local network, same your LAN, and connect WLS-2 to this network. On your WSL2, you can run ip a | grep eth0, result look like: 5: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default … Read more
You, my friend, are confusing the functionality of two different layers. TCP is connection oriented in the sense that there’s a connection establishment, between the two ends where they may negotiate different things like congestion-control mechanism among other things. The transport layer protocols’ general purpose is to provide process-to-process delivery meaning that it doesn’t know … Read more
I’ve used both uIP and lwIP extensively. uIP Great if youre only wanting something basic like a bootloader Small footprint. Uses polling so we’ve never got over 3kbit with it 🙁 No DHCP ‘out of the box’ Poor UDP support lwIP Fully interrupt driven so much faster (~ x10) Includes DHCP with failover AutoIP UDP … Read more
When nc is listening to a UDP socket, it ‘locks on’ to the source port and source IP of the first packet it receives. Check out this trace: socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP) = 3 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0 bind(3, {sa_family=AF_INET, sin_port=htons(10000), sin_addr=inet_addr(“127.0.0.1”)}, 16) = 0 recvfrom(3, “f\n”, 2048, MSG_PEEK, {sa_family=AF_INET, sin_port=htons(52832), sin_addr=inet_addr(“127.0.0.1”)}, [16]) … Read more
If you’re asking if you can use UDP as a Layer 2, then the answer is yes, sort of. There are various protocols that allow you to create a tunnel to another network using a UDP transport, such as L2TP and even IPsec (with NAT traversal). You could also do it at the application layer. … Read more
This possible via Selenium WebDriver. For this you should do the following: Download selenium language-specific client drivers from – http://docs.seleniumhq.org/download/ and add apropriate jar files to your project build path. To run a test with Chrome/Chromium you will also need chromdriver binary which you can download from – http://chromedriver.storage.googleapis.com/index.html Create a test case like this: … Read more
As explained here: Domain name servers store information about part of the domain name space called a zone. The name server is authoritative for a particular zone. A single name server can be authoritative for many zones. Understanding the difference between a zone and a domain is sometimes confusing. A zone is simply a portion … Read more
Using Vagrant 1.6.1 and private networking with Virtualbox you can create multiple private ips just by repeating the config.vm.network definition: # Vagrantfile API/syntax version. Don’t touch unless you know what you’re doing! VAGRANTFILE_API_VERSION = “2” Vagrant.configure(VAGRANTFILE_API_VERSION) do |config| config.vm.box = “precise64” config.vm.network “private_network”, ip: “192.168.50.4” config.vm.network “private_network”, ip: “192.168.50.5” config.vm.network “private_network”, ip: “192.168.50.6” config.vm.network “private_network”, … Read more