My host obtains an IP address and DNS server via DHCP from upstream via
Ethernet like this (systemd 219, Arch Linux)
[Match]
Name=en*
[Network]
DHCP=ipv4
It has the resolv.conf symlink to /run/systemd/resolve/resolv.conf, and the DNS
server from DHCP shows up there.
It also has this test.network file:
[Match]
Name=ve-*
[Network]
Address=0.0.0.0/28
IPMasquerade=yes
IPv4LL=yes
DHCPServer=yes
IPForward=yes
My host runs a container like this: (systemd 219, UBOS (just like Arch Linux))
systemd-nspawn -b -D test -n
The container does not have any networkd configuration. It has the resolv.conf
symlink, and runs systemd-networkd
I was expecting:
* container gets an IP address from host in some new subnet: WORKS, e.g
10.0.0.2
* container can route to upstream via IPMasquerade: WORKS, after manual
'modprobe iptable_nat'
* container gets the DNS server from the host: FAILS: /etc/resolv.conf points
to Google name servers instead (8.8.8.8 etc)
* host and container can ping test (if test is the name of the container
machine per machinectl): FAILS, neither can
What am I misunderstanding or doing wrong? If somebody educates me, I’ll put
the insights on a wiki somewhere (e.g. Arch)
Thanks,
Johannes.
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