9 Nov
2018
9 Nov
'18
3:12 p.m.
Hello Henry.
I was caught out by this with a home server running 18.04. The way you
configure networking has changed from that version to use a system
called Netplan (https://netplan.io).
You'll need to create a .yaml file called "/etc/netplan/config.yaml" and
then run `sudo netplan apply` to set up the networking according to it.
See https://netplan.io/examples for examples.
Thanks
Gavin
On 09/11/2018 14:40, Henry Gomersall wrote:
Following an upgrade to Ubuntu 18.04, my network is
not coming up
properly. The interface seems to come up, but traffic is not being
routed properly.
Andy checked and he can ping my VPS some within Bitfolk, but from the
machine I cannot see the outside world, nor can I see the machine from
the outside world.
/etc/network/interfaces is as below. Does anybody have any ideas as to
what is wrong?
#### BEGIN
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
address 85.119.83.128
netmask 255.255.248.0
gateway 85.119.80.1
auto eth0:1
iface eth0:1 inet static
address 212.13.195.128
netmask 255.255.255.255
iface eth0 inet6 static
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
address 85.119.83.128
netmask 255.255.248.0
gateway 85.119.80.1
auto eth0:1
iface eth0:1 inet static
address 212.13.195.128
netmask 255.255.255.255
address 2001:ba8:1f1:f1e5::2
netmask 64
gateway fe80::fcff:ffff:feff:ffff
pre-up echo "/sbin/modprobe ipv6" &&
/sbin/modprobe ipv6 || true
post-up echo "/proc/sys/net/ipv6/conf/default/forwarding=0" &&
echo 0 > /proc/sys/net/ipv6/conf/default/forwarding || true
post-up echo "/proc/sys/net/ipv6/conf/all/forwarding=0" &&
echo 0 > /proc/sys/net/ipv6/conf/all/forwarding || true
post-up echo "/proc/sys/net/ipv6/conf/default/accept_ra=0" &&
echo 0 > /proc/sys/net/ipv6/conf/default/accept_ra || true
post-up echo "/proc/sys/net/ipv6/conf/all/accept_ra=0" &&
echo 0 > /proc/sys/net/ipv6/conf/all/accept_ra || true
post-up echo "/proc/sys/net/ipv6/conf/$IFACE/accept_ra=0" &&
echo 0 > /proc/sys/net/ipv6/conf/$IFACE/accept_ra || true
post-up echo "/proc/sys/net/ipv6/conf/default/autoconf=0" &&
echo 0 > /proc/sys/net/ipv6/conf/default/autoconf || true
post-up echo "/proc/sys/net/ipv6/conf/all/autoconf=0" &&
echo 0 > /proc/sys/net/ipv6/conf/all/autoconf || true
post-up echo "/proc/sys/net/ipv6/conf/$IFACE/autoconf=0" &&
echo 0 > /proc/sys/net/ipv6/conf/$IFACE/autoconf || true
#### END
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