[Bug 1735944] [NEW] cannot route IPv6 addresses

Robin Hall 1735944 at bugs.launchpad.net
Sat Dec 2 20:42:40 UTC 2017


Public bug reported:

I have install Ubuntu 17.10 64 bit server and set a static IP address as
well as an IPv6 address. I have also tried using DHCP6 as well. I can
ping locally any address on the same VLAN. I cannot ping outside of the
local addresses. This is a new install on a Dell R710 running ESXi. I
have other servers that have no problem routing, this is the only server
using netplan. I have tried adding a static route, setting gateway6: and
neither works.

netplan config:

network:
  version: 2
  renderer: networkd
  ethernets:
    ens160:
      dhcp4: no
      dhcp6: no
      addresses: [192.168.20.20/24, "2000:2000:BEEF:FEEB::10/64"]
      gateway4: 192.168.20.1
      gateway6:  2000:2000:BEEF:FEEB::1
      nameservers:
         addresses: [192.168.100.3,192.168.20.10]

ip -6 route:

maineac at MARIADB-01:/etc/netplan$ ip -6 route
2000:2000:BEEF:FEEB::/64 dev ens160 proto kernel metric 256  pref medium
2000:2000:BEEF:FEEB::/64 dev ens160 proto ra metric 1024  pref medium
fe80::/64 dev ens160 proto kernel metric 256  pref medium
default proto static metric 1024
        nexthop via 2000:2000:BEEF:FEEB::1  dev ens160 weight 1
        nexthop via fe80::1:1  dev ens160 weight 1
        nexthop via fe80::1  dev ens160 weight 1

kernel routing table:

maineac at MARIADB-01:/etc/netplan$ route -6
Kernel IPv6 routing table
Destination                    Next Hop                   Flag Met Ref Use If
localhost/128                  [::]                       U    256 1     0 lo
2000:2000:BEEF:FEEB::/64       [::]                       U    256 3    13 ens160
2000:2000:BEEF:FEEB::/64       [::]                       U    1024 1     0 ens160
fe80::/64                      [::]                       U    256 2     6 ens160
[::]/0                         2000:2000:BEEF:FEEB::1     UG   1024 3     6 ens160
[::]/0                         fe80::1:1                  UG   1024 2     4 ens160
[::]/0                         fe80::1                    UG   1024 3    12 ens160
[::]/0                         [::]                       !n   -1  1    51 lo
localhost/128                  [::]                       Un   0   4     3 lo
MARIADB-01/128                 [::]                       Un   0   2     0 lo
MARIADB-01/128                 [::]                       Un   0   4     2 lo
MARIADB-01/128                 [::]                       Un   0   2     0 lo
MARIADB-01/128                 [::]                       Un   0   5    40 lo
ff00::/8                       [::]                       U    256 5   129 ens160
[::]/0                         [::]                       !n   -1  1    53 lo


Description:    Ubuntu 17.10
Release:        17.10

maineac at MARIADB-01:~$ apt-cache policy nplan
nplan:
  Installed: 0.30
  Candidate: 0.30
  Version table:
 *** 0.30 500
        500 http://us.archive.ubuntu.com/ubuntu artful/main amd64 Packages
        100 /var/lib/dpkg/status

I expect to route beyond the gateway on IPv6

I cannot get beyond local addresses.

** Affects: nplan (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1735944

Title:
  cannot route IPv6 addresses

Status in nplan package in Ubuntu:
  New

Bug description:
  I have install Ubuntu 17.10 64 bit server and set a static IP address
  as well as an IPv6 address. I have also tried using DHCP6 as well. I
  can ping locally any address on the same VLAN. I cannot ping outside
  of the local addresses. This is a new install on a Dell R710 running
  ESXi. I have other servers that have no problem routing, this is the
  only server using netplan. I have tried adding a static route, setting
  gateway6: and neither works.

  netplan config:

  network:
    version: 2
    renderer: networkd
    ethernets:
      ens160:
        dhcp4: no
        dhcp6: no
        addresses: [192.168.20.20/24, "2000:2000:BEEF:FEEB::10/64"]
        gateway4: 192.168.20.1
        gateway6:  2000:2000:BEEF:FEEB::1
        nameservers:
           addresses: [192.168.100.3,192.168.20.10]

  ip -6 route:

  maineac at MARIADB-01:/etc/netplan$ ip -6 route
  2000:2000:BEEF:FEEB::/64 dev ens160 proto kernel metric 256  pref medium
  2000:2000:BEEF:FEEB::/64 dev ens160 proto ra metric 1024  pref medium
  fe80::/64 dev ens160 proto kernel metric 256  pref medium
  default proto static metric 1024
          nexthop via 2000:2000:BEEF:FEEB::1  dev ens160 weight 1
          nexthop via fe80::1:1  dev ens160 weight 1
          nexthop via fe80::1  dev ens160 weight 1

  kernel routing table:

  maineac at MARIADB-01:/etc/netplan$ route -6
  Kernel IPv6 routing table
  Destination                    Next Hop                   Flag Met Ref Use If
  localhost/128                  [::]                       U    256 1     0 lo
  2000:2000:BEEF:FEEB::/64       [::]                       U    256 3    13 ens160
  2000:2000:BEEF:FEEB::/64       [::]                       U    1024 1     0 ens160
  fe80::/64                      [::]                       U    256 2     6 ens160
  [::]/0                         2000:2000:BEEF:FEEB::1     UG   1024 3     6 ens160
  [::]/0                         fe80::1:1                  UG   1024 2     4 ens160
  [::]/0                         fe80::1                    UG   1024 3    12 ens160
  [::]/0                         [::]                       !n   -1  1    51 lo
  localhost/128                  [::]                       Un   0   4     3 lo
  MARIADB-01/128                 [::]                       Un   0   2     0 lo
  MARIADB-01/128                 [::]                       Un   0   4     2 lo
  MARIADB-01/128                 [::]                       Un   0   2     0 lo
  MARIADB-01/128                 [::]                       Un   0   5    40 lo
  ff00::/8                       [::]                       U    256 5   129 ens160
  [::]/0                         [::]                       !n   -1  1    53 lo


  Description:    Ubuntu 17.10
  Release:        17.10

  maineac at MARIADB-01:~$ apt-cache policy nplan
  nplan:
    Installed: 0.30
    Candidate: 0.30
    Version table:
   *** 0.30 500
          500 http://us.archive.ubuntu.com/ubuntu artful/main amd64 Packages
          100 /var/lib/dpkg/status

  I expect to route beyond the gateway on IPv6

  I cannot get beyond local addresses.

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