Servers Unable to Reconnect to the Internet (via Ethernet) after Router Loses Internet Connection

Issues related to configuring your network
User avatar
jlehtone
Posts: 2774
Joined: 2007/12/11 08:17:33
Location: Finland

Re: Servers Unable to Reconnect to the Internet (via Ethernet) after Router Loses Internet Connection

Post by jlehtone » 2020/05/12 22:22:12

Please, show output of

Code: Select all

nmcli -f ipv4 con show p3p1
just to see that you have cleaned out properly.

keennay
Posts: 10
Joined: 2019/11/28 21:56:05

Re: Servers Unable to Reconnect to the Internet (via Ethernet) after Router Loses Internet Connection

Post by keennay » 2020/05/12 22:29:09

jlehtone wrote:
2020/05/12 22:22:12
Please, show output of

Code: Select all

nmcli -f ipv4 con show p3p1
just to see that you have cleaned out properly.
Similar across each server (some use p3p1, others use enp69s0):

Code: Select all

nmcli -f ipv4 con show enp69s0

ipv4.method:                            manual
ipv4.dns:                               --
ipv4.dns-search:                        --
ipv4.dns-options:                       ""
ipv4.dns-priority:                      0
ipv4.addresses:                         192.168.1.27/27
ipv4.gateway:                           --
ipv4.routes:                            --
ipv4.route-metric:                      -1
ipv4.route-table:                       0 (unspec)
ipv4.routing-rules:                     --
ipv4.ignore-auto-routes:                no
ipv4.ignore-auto-dns:                   no
ipv4.dhcp-client-id:                    --
ipv4.dhcp-timeout:                      0 (default)
ipv4.dhcp-send-hostname:                yes
ipv4.dhcp-hostname:                     --
ipv4.dhcp-fqdn:                         --
ipv4.never-default:                     no
ipv4.may-fail:                          yes
ipv4.dad-timeout:                       -1 (default)

User avatar
jlehtone
Posts: 2774
Joined: 2007/12/11 08:17:33
Location: Finland

Re: Servers Unable to Reconnect to the Internet (via Ethernet) after Router Loses Internet Connection

Post by jlehtone » 2020/05/13 06:17:51

Looks clean.

If you don't use IPv6, then 'ipv6.method' is best to set to 'ignore'.

Note the 'ipv4.never-default'. If DHCP is used, then 'yes' in this setting allows to ignore the gateway that the DHCP server offers.

keennay
Posts: 10
Joined: 2019/11/28 21:56:05

Re: Servers Unable to Reconnect to the Internet (via Ethernet) after Router Loses Internet Connection

Post by keennay » 2020/05/13 11:05:13

jlehtone wrote:
2020/05/13 06:17:51
Looks clean.

If you don't use IPv6, then 'ipv6.method' is best to set to 'ignore'.

Note the 'ipv4.never-default'. If DHCP is used, then 'yes' in this setting allows to ignore the gateway that the DHCP server offers.
👌. Thanks again

Cheers

Post Reply

Return to “CentOS 7 - Networking Support”