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Title: Ping give socket error initially if IPv6 is disabled Status in iputils package in Ubuntu: New Bug description: With IpV6 enabled everything works well. However if you disable ipv6 by editing /etc/default/grub with the following entry GRUB_CMDLINE_LINUX_DEFAULT="ipv6.disable=1" then when you ping there is an initial socket error ping localhost ping: socket: Address family not supported by protocol PING localhost (127.0.0.1) 56(84) bytes of data. 64 bytes from localhost (127.0.0.1): icmp_seq=1 ttl=64 time=0.046 ms 64 bytes from localhost (127.0.0.1): icmp_seq=2 ttl=64 time=0.038 ms 64 bytes from localhost (127.0.0.1): icmp_seq=3 ttl=64 time=0.028 ms 64 bytes from localhost (127.0.0.1): icmp_seq=4 ttl=64 time=0.028 ms however ping -4 works ping -4 localhost PING localhost (127.0.0.1) 56(84) bytes of data. 64 bytes from localhost (127.0.0.1): icmp_seq=1 ttl=64 time=0.032 ms 64 bytes from localhost (127.0.0.1): icmp_seq=2 ttl=64 time=0.029 ms 64 bytes from localhost (127.0.0.1): icmp_seq=3 ttl=64 time=0.021 ms so it looks like ping is trying ipv6 first and not detecting that its disabled. ProblemType: Bug DistroRelease: Ubuntu 22.04 Package: iputils-ping 3:20210202-1build1 ProcVersionSignature: Ubuntu 5.13.0-19.19-generic 5.13.14 Uname: Linux 5.13.0-19-generic x86_64 ApportVersion: 2.20.11-0ubuntu74 Architecture: amd64 CasperMD5CheckResult: pass Date: Mon Jan 3 17:42:07 2022 InstallationDate: Installed on 2022-01-03 (0 days ago) InstallationMedia: Ubuntu-Server 22.04 LTS "Jammy Jellyfish" - Alpha amd64 (20211029) ProcEnviron: TERM=xterm PATH=(custom, no user) LANG=en_GB.UTF-8 SHELL=/bin/bash SourcePackage: iputils UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/iputils/+bug/1956243/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp