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Thu, 15 Aug 2024 15:16:24 -0700 (PDT) From: Freek de Kruijf To: netdev@vger.kernel.org Subject: Strange behavior of command ip Date: Fri, 16 Aug 2024 00:16:23 +0200 Message-ID: <3605451.dWV9SEqChM@eiktum> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="utf-8" I have the following bash script: #!/bin/bash getipv6() { nmcli con modify "Wired connection 1" ipv6.addr-gen-mode eui64 nmcli con down "Wired connection 1" nmcli con up "Wired connection 1" /usr/bin/ip -6 a } getipv6 When I run the script the output is: Connection 'Wired connection 1' successfully deactivated (D-Bus active path: / org/freedesktop/NetworkManager/ActiveConnection/23) Connection successfully activated (D-Bus active path: /org/freedesktop/ NetworkManager/ActiveConnection/24) 1: lo: mtu 65536 state UNKNOWN qlen 1000 inet6 ::1/128 scope host noprefixroute valid_lft forever preferred_lft forever 2: eth0: mtu 1500 state UP qlen 1000 inet6 fe80::dea6:32ff:fe55:12be/64 scope link tentative noprefixroute valid_lft forever preferred_lft forever When I run the command "/usr/bin/ip -6 a" the output is: 1: lo: mtu 65536 state UNKNOWN qlen 1000 inet6 ::1/128 scope host noprefixroute valid_lft forever preferred_lft forever 2: eth0: mtu 1500 state UP qlen 1000 inet6 2001:4c3c:702:b700:dea6:32ff:fe55:12be/64 scope global dynamic noprefixroute valid_lft 4126sec preferred_lft 3466sec inet6 fe80::dea6:32ff:fe55:12be/64 scope link noprefixroute valid_lft forever preferred_lft forever Now the global IPv6 of eth0 is shown. -- vr.gr. Freek de Kruijf