Forward traffic between two libvirt NAT bridges (firewalld nftables)

On RHEL with firewalld’s nftables backend, allowing one libvirt VM network to reach another is not a classic firewall-cmd --direct problem anymore. Libvirt installs its own ip libvirt_network table, and that is what rejects NEW traffic between bridges. ...

28 July 2026 · 5 min · 919 words · Stephane V.

dhcp_start, dhcp_end, inspection_iprange

When installing Red Hat Openstack until version 17.1, we use tripleo and the so called “installer” : The Undercloud. To configure it we have to set some parameters in file undercloud.conf, where we define 2 dhcp range : dhcp_start, dhcp_end inspection_iprange ...

25 July 2024 · 4 min · 660 words · Stephane V.