VyOS command definitions, scripts, and utilities (mirror of https://github.com/vyos/vyos-1x.git) https://git.amelek.net/vyos/vyos-1x.git/atom?h=feature%2FT9082-codeql-cpp 2025-10-29T11:22:42+00:00 2025-10-29T11:22:42+00:00 Christian Breunig christian@breunig.cc 2025-10-29T11:12:52+00:00 urn:sha1:c5ef4f4ebf38a249998498ebe443f3cc733b64fd Commit f08a5700e7 ("dhcpv6: T7646: restore missing default route after upgrade") introduced a regression affecting both non-VIF and VIF interfaces. The addressing mode check in the migration logic was incorrect for both cases. For non-VIF interfaces, the migration was skipped entirely due to a missing configuration test. For VIF (VLAN) interfaces, the existing test always evaluated to true, since it incorrectly assumed that DHCPv6 was configured even when a static address was present. Smoketests have been extended to cover for these cases. 2025-09-13T11:16:40+00:00 Christian Breunig christian@breunig.cc 2025-09-13T11:16:40+00:00 urn:sha1:f08a5700e725a2ed4c53320b310167826953215d Commit de44c6aef249 ("interface: T7379: do not request SLAAC default route when only DHCPv6 is set") introduced a behavioral change while addressing an earlier issue fixed in e9fb2078d5ea ("interface: T7375: SLAAC assigned address is not cleared when removing SLAAC"). This change caused unintended connectivity loss after upgrading to VyOS 1.4.3. The underlying reason is that VyOS now requires explicit configuration to determine how IPv6 addressing and routing should be handled, rather than making assumptions: Requesting a DHCPv6 address alone will correctly assign an address. However, since the IPv6 default route is typically advertised via SLAAC (and not DHCPv6), SLAAC must also be explicitly enabled to receive the default route. Historically, this distinction was implicit and did not require additional configuration. To preserve backward compatibility, a configuration migrator has been added. It inspects existing configurations that only request a DHCPv6 address and automatically appends the required CLI node to also enable SLAAC, ensuring that the default route is restored after upgrade.