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Line 27: − Develer has a 10mbit up/downlink and asks to limit bandwidth usage from hosted services.+ − There is a traffic shaper, but it may have trouble shaping 6to4 traffic. − Bender is globally accessible through public, static IPv4 address.+ + + − The virbr0 bridge is created by libvirt on startup with <code>/etc/libvirt/qemu/networks/default.xml</code>.+ − Libvirt does not yet support assigning IPv6 addresses to bridges, therefore we do this in <code>/etc/rc.local</code>:+ − ip addr add 2002:5395:9edc:1::1/64 dev virbr0 − To automatically configure network and on the guests, Bender also runs radvd, the IPv6 Routing Advertisement+ − daemon. The contents of <code>/etc/radvd.conf</code> are: − − interface virbr0 − { − IgnoreIfMissing on; − AdvSendAdvert on; − MinRtrAdvInterval 30; − MaxRtrAdvInterval 100; − AdvDefaultPreference low; − AdvHomeAgentFlag off; − − #bernie: subnet 1 of our /48 6to4 on Develer Consiagnet − prefix 2002:5395:9edc:1::1/64 − { − AdvOnLink on; − AdvAutonomous on; − }; − }; − − == Hosted VMs == − All buildslaves currently run off bender as KVM virtual machines managed by libvirtd. − − The machines are not globally addressable on IPv4 and are only reachable by IPv6. The − IPv6 address is dynamically configured by radvd to a subnet of the public 6to4 net. − − All the VMs are in /srv/images. See the README in the same directory. − − They have been created with − − virt-install --name buildslave-name --ram 512 \ − --disk path=/srv/images/buildslave-name.img,size=10 − --network network:default \ − --location "mirror-http-address" \ − --extra-args="console=tty0 console=ttyS0,115200n8 serial"
no edit summary
== Network configuration ==
== Network configuration ==
Network configuration is managed via [https://netplan.io/ netplan]. To modify, do:
vi /etc/netplan/bender.yaml
netplan generate
netplan apply
Bender is globally accessible through a public, static IPv4 address.
IPv6 configuration is being discussed with Sonic net admins.
The br0 bridge is created libvirt on startup with <code>/etc/libvirt/qemu/networks/default.xml</code>. This is a NAT interface and is not meant for VMs directly
Guests simply need to be configured to accept IPv6 routing advertisements. The DNS must be assigned manually.
Guests simply need to be configured to accept IPv6 routing advertisements. The DNS must be assigned manually.