Issue #20048 has been updated by vo.x (Vit Ondruch). On Fedora, we are using [Mock](https://rpm-software-management.github.io/mock/) for that purpose. E.g. you need to do something like: ~~~ $ sudo dnf install mock $ usermod -a -G mock [User name] $ # To prepare the buildroot and install all the required packages $ mock -i gcc make ... $ mock shell --unpriv --enable-network ~~~ This will give you shell, you can prepare your environment, download the sources etc. To have the newtwork disable, you can just drop the `--enable-network`. And you can access the root in `/var/lib/mock/fedora-rawhide-x86_64/root`. And after you are done, you can clean up: ~~~ $ mock --scrub all ~~~ If you'd like to try different Fedora version, you can use e.g. `mock -r fedora-38-x86_64`. Rawhide is the default. ---------------------------------------- Bug #20048: UDPSocket#remote_address spec errors https://bugs.ruby-lang.org/issues/20048#change-105595 * Author: vo.x (Vit Ondruch) * Status: Open * Priority: Normal * ruby -v: ruby 3.3.0dev (2023-12-07 master 071df40495) [x86_64-linux] * Backport: 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN ---------------------------------------- Testing of Fedora Rawhide, we have recently started to observe following errors: ~~~ $ make -C redhat-linux-build test-spec MSPECOPT="-fs ../spec/ruby/library/socket/udpsocket" ... snip ... 1) An exception occurred during: before :each UDPSocket#local_address using IPv4 using an implicit hostname the returned Addrinfo uses the correct IP address ERROR Socket::ResolutionError: getaddrinfo: Name or service not known /builddir/build/BUILD/ruby-3.3.0-071df40495/spec/ruby/library/socket/udpsocket/local_address_spec.rb:66:in `connect' /builddir/build/BUILD/ruby-3.3.0-071df40495/spec/ruby/library/socket/udpsocket/local_address_spec.rb:66:in `block (4 levels) in <top (required)>' /builddir/build/BUILD/ruby-3.3.0-071df40495/spec/ruby/library/socket/udpsocket/local_address_spec.rb:4:in `<top (required)>' 2) An exception occurred during: before :each UDPSocket#local_address using IPv6 using an implicit hostname the returned Addrinfo uses the correct IP address ERROR Socket::ResolutionError: getaddrinfo: Name or service not known /builddir/build/BUILD/ruby-3.3.0-071df40495/spec/ruby/library/socket/udpsocket/local_address_spec.rb:66:in `connect' /builddir/build/BUILD/ruby-3.3.0-071df40495/spec/ruby/library/socket/udpsocket/local_address_spec.rb:66:in `block (4 levels) in <top (required)>' /builddir/build/BUILD/ruby-3.3.0-071df40495/spec/ruby/library/socket/udpsocket/local_address_spec.rb:4:in `<top (required)>' 3) An exception occurred during: before :each UDPSocket#remote_address using IPv4 using an implicit hostname the returned Addrinfo uses the correct IP address ERROR Socket::ResolutionError: getaddrinfo: Name or service not known /builddir/build/BUILD/ruby-3.3.0-071df40495/spec/ruby/library/socket/udpsocket/remote_address_spec.rb:65:in `connect' /builddir/build/BUILD/ruby-3.3.0-071df40495/spec/ruby/library/socket/udpsocket/remote_address_spec.rb:65:in `block (4 levels) in <top (required)>' /builddir/build/BUILD/ruby-3.3.0-071df40495/spec/ruby/library/socket/udpsocket/remote_address_spec.rb:4:in `<top (required)>' 4) An exception occurred during: before :each UDPSocket#remote_address using IPv6 using an implicit hostname the returned Addrinfo uses the correct IP address ERROR Socket::ResolutionError: getaddrinfo: Name or service not known /builddir/build/BUILD/ruby-3.3.0-071df40495/spec/ruby/library/socket/udpsocket/remote_address_spec.rb:65:in `connect' /builddir/build/BUILD/ruby-3.3.0-071df40495/spec/ruby/library/socket/udpsocket/remote_address_spec.rb:65:in `block (4 levels) in <top (required)>' /builddir/build/BUILD/ruby-3.3.0-071df40495/spec/ruby/library/socket/udpsocket/remote_address_spec.rb:4:in `<top (required)>' Finished in 0.020615 seconds 11 files, 95 examples, 123 expectations, 0 failures, 4 errors, 0 tagged make: *** [uncommon.mk:983: yes-test-spec] Error 1 make: Leaving directory '/builddir/build/BUILD/ruby-3.3.0-071df40495/redhat-linux-build' ~~~ Please note that the build environment does not have network connection enabled by default. As soon as the network connection is available, the test cases pass just fine. This started to happen between these two commits: https://github.com/ruby/ruby/compare/c8b60c8ac2c8bbd077150792b5b207e983ab363... Where the culprit likely is commit:git|d2ba8ea54a4089959afdeecdd963e3c4ff391748 Originally reported [here](https://lists.fedoraproject.org/archives/list/ruby-sig@lists.fedoraproject.o...) -- https://bugs.ruby-lang.org/