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binro
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Joined: 06 May 2005
Posts: 724
Location: Bangkok, Thailand
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 Posted: Tue Jan 16, 2024 3:32 pm Post subject: New mobo: now network problems [SOLVED] |
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The mobo on a machine I use as a server died last week and I had another mobo installed. I thought I could just boot the machine but the network device had changed: enp5s0 to enp3s0. I made the following changes to configuration files:
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ll /etc/init.d/net.enp*
lrwxrwxrwx 1 root root 6 Dec 26 2019 /etc/init.d/net.enp3s0 -> net.lo
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| Code: |
/etc/conf.d/net
modules="ifconfig"
config_enp3s0="192.168.100.2/24 brd 192.168.100.255"
routes_enp3s0="default via 192.168.100.1"
gateway="/192.168.100.1"
iface_lo="dhcp127.0.0.1 netmask 255.0.0.0"
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The mysterious thing is:
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# ip -p a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 brd 127.255.255.255 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: ip_vti0@NONE: <NOARP> mtu 1480 qdisc noop state DOWN group default qlen 1000
link/ipip 0.0.0.0 brd 0.0.0.0
3: enp3s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether 78:24:af:39:7c:e2 brd ff:ff:ff:ff:ff:ff
inet 192.168.100.2/24 brd 192.168.100.255 scope global enp3s0
valid_lft forever preferred_lft forever
inet 92.168.100.98/24 brd 192.168.100.255 scope global secondary noprefixroute enp3s0
valid_lft forever preferred_lft forever
inet6 fe80::7a24:afff:fe39:7ce2/64 scope link
valid_lft forever preferred_lft forever
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The problem is I don't want 192.168.100.98 (which must come from the dhcp server on the router); I do want 192.168.100.2 which is defined in /etc/hosts. I have had to define it manually. Since I have /etc/conf.d/net configured, why is dhcp getting invoked. Remember, this set up has been running for about 15 years like clockwork! Attempts to delete 192.168.100.98 get:
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# ip address delete 192.168.100.98/24 enp3s0
Error: either "local" is duplicate, or "enp3s0" is a garbage.
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The dhcpcd service is running, although I don't start it (normally I use dnsmasq). Any pointers would be greatly appreciated.
TIA
Robin
_________________
"Ship me somewheres east of Suez, where the best is like the worst,
Where there ain't no Ten Commandments an' a man can raise a thirst"
from "Mandalay" by Rudyard Kipling
Last edited by binro on Wed Jan 17, 2024 7:31 am; edited 1 time in total |
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pietinger
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Joined: 17 Oct 2006
Posts: 4167
Location: Bavaria
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| Posted: Tue Jan 16, 2024 8:35 pm Post subject: |
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1. Please make sure you have no DHCPCD in your runlevels. Check it with "rc-update". Check also if you have added net.enp3s0 to your deafault runlevel.
2. This is my /etc/conf.d/net and it is sufficient when doing a static IP address configuration (Information for DNS is taken from /etc/resolv.conf; I am using "unbound" and have therefore "nameserver 127.0.0.1" in it):
| Code: | config_enp2s0="192.168.2.9/24"
routes_enp2s0="default via 192.168.2.1" |
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binro
l33t
Joined: 06 May 2005
Posts: 724
Location: Bangkok, Thailand
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| Posted: Tue Jan 16, 2024 8:47 pm Post subject: |
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Pietinger, thanks for the response. dhcpcd is not in any runlevel.
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rc-update -a del dhcpcd
* rc-update: service `dhcpcd' is not in the runlevel `shutdown'
* rc-update: service `dhcpcd' is not in the runlevel `single'
* rc-update: service `dhcpcd' is not in the runlevel `boot'
* rc-update: service `dhcpcd' is not in the runlevel `sysinit'
* rc-update: service `dhcpcd' is not in the runlevel `nonetwork'
* rc-update: service `dhcpcd' is not in the runlevel `default
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But I forgot to add net.enp3s0 to a runlevel; I think that is the problem. 
_________________
"Ship me somewheres east of Suez, where the best is like the worst,
Where there ain't no Ten Commandments an' a man can raise a thirst"
from "Mandalay" by Rudyard Kipling |
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pietinger
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Joined: 17 Oct 2006
Posts: 4167
Location: Bavaria
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| Posted: Wed Jan 17, 2024 3:00 am Post subject: |
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| binro wrote: | | Pietinger, thanks for the response. |
You are very Welcome ! 
| binro wrote: | | [...] I think that is the problem. |
Possibly ... 
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binro
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Joined: 06 May 2005
Posts: 724
Location: Bangkok, Thailand
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| Posted: Wed Jan 17, 2024 7:31 am Post subject: |
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Yes, I added net.enp3s0 to runlevel boot and everything starts up normally again!. Phew!
_________________
"Ship me somewheres east of Suez, where the best is like the worst,
Where there ain't no Ten Commandments an' a man can raise a thirst"
from "Mandalay" by Rudyard Kipling |
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pietinger
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Joined: 17 Oct 2006
Posts: 4167
Location: Bavaria
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Networking & Security
