René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"ng serve per default only listens on IPv6 (Linux)","articleBody":"### Command\n\nserve\n\n### Is this a regression?\n\n- [ ] Yes, this behavior used to work in the previous version\n\n### The previous version in which this bug was not present was\n\n_No response_\n\n### Description\n\n`ng serve` seems to only listen on IPv6 per default.\n\nThis seems like pretty weird behaviour, as most services do not work like that, and it makes debugging issues which involves networks and proxies kind of unexcepted. \n \n\n### Minimal Reproduction\n\nServe an application:\n```\nng serve\n\n[..]\nWatch mode enabled. Watching for file changes...\nRe-optimizing dependencies because lockfile has changed\n  ➜  Local:   http://localhost:4200/\n  ➜  press h + enter to show help\n```\n\nIt says its listening on localhost. \nLocalhost is resolving to both `::1` and `127.0.0.1`. Still ng decides to only listen on `::1`:\n```\nnetstat -pnlt | grep ':4200'\ntcp6       0      0 ::1:4200                :::*                    LISTEN      2145414/ng serve\n```\n\nI can force it to run it on IPv4 with binding to `127.0.0.1` or `0.0.0.0`, but then  it only listens to ipv4, and not 6 of course:\n```\nng serve --host 127.0.0.1\n\nnetstat -pnlt | grep ':4200'\ntcp        0      0 127.0.0.1:4200          0.0.0.0:*               LISTEN      2152537/ng serve --\n```\n\nStarting it explicitly with `localhost` also only binds it to IPv6:\n```\nng serve --host localhost\n\nnetstat -pnlt | grep ':4200'\ntcp6       0      0 ::1:4200                :::*                    LISTEN      2164254/ng serve --\n```\n\nIt seems like this \"issue\" is only reproducible on Linux, on Mac OSX, ng binds \"correctly\".\n\n### Exception or Error\n\n```text\n\n```\n\n### Your Environment\n\n```text\nAngular CLI: 17.3.2\nNode: 20.9.0\nPackage Manager: npm 10.1.0\nOS: linux x64\n\nAngular: 17.3.12\n... animations, common, compiler, compiler-cli, core, elements\n... forms, language-service, platform-browser\n... platform-browser-dynamic, platform-server, router\n\nPackage                              Version\n--------------------------------------------------------------\n@angular-devkit/architect            0.1703.2\n@angular-devkit/build-angular        17.3.2\n@angular-devkit/core                 17.3.2\n@angular-devkit/schematics           17.3.2\n@angular/cdk                         17.3.10\n@angular/cli                         17.3.2\n@angular/material                    17.3.10\n@angular/material-date-fns-adapter   17.3.10\n@schematics/angular                  17.3.2\nrxjs                                 7.8.1\ntypescript                           5.4.3\nzone.js                              0.14.4\n```\n\n### Anything else relevant?\n\n_No response_","author":{"url":"https://github.com/eni23","@type":"Person","name":"eni23"},"datePublished":"2024-12-03T09:45:21.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":2},"url":"https://github.com/29028/angular-cli/issues/29028"}