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bartoszw

Member

Registered: 2020-02-25

Posts: 10

[SOLVED] Slow connecting to the network after boot

Hi,

After booting my system it takes around 1 minute to connect to wired network (ping not responding). It was working correctly, instant connect, but around 2 months ago something changed, I was not changing anything in configuration nor router settings. I have configured static ip address by dhcpcd.

cat /etc/dhcpcd.conf


# A sample configuration for dhcpcd.
# See dhcpcd.conf(5) for details.

# Allow users of this group to interact with dhcpcd via the control socket.
#controlgroup wheel

# Inform the DHCP server of our hostname for DDNS.
hostname

# Use the hardware address of the interface for the Client ID.
#clientid
# or
# Use the same DUID + IAID as set in DHCPv6 for DHCPv4 ClientID as per RFC4361.
# Some non-RFC compliant DHCP servers do not reply with this set.
# In this case, comment out duid and enable clientid above.
duid

# Persist interface configuration when dhcpcd exits.
persistent

# Rapid commit support.
# Safe to enable by default because it requires the equivalent option set
# on the server to actually work.
option rapid_commit

# A list of options to request from the DHCP server.
option domain_name_servers, domain_name, domain_search, host_name
option classless_static_routes
# Respect the network MTU. This is applied to DHCP routes.
option interface_mtu

# Most distributions have NTP support.
#option ntp_servers

# A ServerID is required by RFC2131.
require dhcp_server_identifier

# Generate SLAAC address using the Hardware Address of the interface
#slaac hwaddr
# OR generate Stable Private IPv6 Addresses based from the DUID
slaac private
noipv4ll

interface eno1
static ip_address=192.168.0.25/24
static routers=192.168.0.1
static domain_name_servers=8.8.8.8 8.8.4.4

ip route show


default via 192.168.0.1 dev eno1 src 192.168.0.25 metric 1002 
172.17.0.0/16 dev docker0 proto kernel scope link src 172.17.0.1 linkdown 
172.18.0.0/16 dev br-311ed84a26bf proto kernel scope link src 172.18.0.1 linkdown 
192.168.0.0/24 dev eno1 proto dhcp scope link src 192.168.0.25 metric 1002

any thoughts what could happened?

Last edited by bartoszw (2023-01-26 10:13:15)

Head_on_a_Stick

Member

From: The Wirral

Registered: 2014-02-20

Posts: 9,003

Website

Re: [SOLVED] Slow connecting to the network after boot

Have you checked the journal for clues?

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Jin, Jîyan, Azadî

bartoszw

Member

Registered: 2020-02-25

Posts: 10

Re: [SOLVED] Slow connecting to the network after boot

As I understand network getting connected under one second?

boot on:
Jan 26 08:05:56 bb kernel: Linux version 6.1.5-arch2-1 (linux@archlinux) (gcc (GCC) 12.2.0, GNU ld (GNU Binutils) 2.39.0) #1 SMP PREEMPT_DYNAMIC Thu, 12 Jan 2023 22:42:33 +0000

journalctl -b | grep dhcpcd


Jan 26 08:05:56 bb systemd[1]: Created slice Slice /system/dhcpcd.
Jan 26 08:05:57 bb systemd[1]: Starting dhcpcd on eno1...
Jan 26 08:05:57 bb dhcpcd[673]: dhcpcd-9.4.1 starting
Jan 26 08:05:57 bb dhcpcd[678]: DUID 00:04:3e:da:xx:8c:42:e9:xx:c1:8f:4a:xx:d4:c4:54:cc:ae
Jan 26 08:05:58 bb systemd[1]: Started dhcpcd on eno1.
Jan 26 08:05:58 bb audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=dhcpcd@eno1 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
Jan 26 08:05:58 bb dhcpcd[678]: eno1: waiting for carrier
Jan 26 08:06:19 bb dhcpcd[678]: eno1: carrier acquired
Jan 26 08:06:19 bb dhcpcd[678]: eno1: IAID c4:54:xx:ae
Jan 26 08:06:19 bb dhcpcd[678]: eno1: adding address fe80::xxxx:xxxx:36b8:7cef
Jan 26 08:06:19 bb dhcpcd[678]: eno1: probing address 192.168.0.25/24
Jan 26 08:06:20 bb dhcpcd[678]: eno1: soliciting an IPv6 router
Jan 26 08:06:25 bb dhcpcd[678]: eno1: using static address 192.168.0.25/24
Jan 26 08:06:25 bb dhcpcd[678]: eno1: adding route to 192.168.0.0/24
Jan 26 08:06:25 bb dhcpcd[678]: eno1: adding default route via 192.168.0.1
Jan 26 08:06:33 bb dhcpcd[678]: eno1: no IPv6 Routers available

So it should be ok?

Last edited by bartoszw (2023-01-26 08:28:52)

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 76,393

Re: [SOLVED] Slow connecting to the network after boot

journalctl -b | grep dhcpcd

tells us what dhcpcd does and when, it won't explain any issues w/ your network stack that are not directly caused by dhcpcd bugs.

=> Post the entire journal.

Your grep shows that dhcpcd acts on eno1 at 08:05:58, then waits for 21 seconds for a carrier (until the NIC recognizes that a cable is plugged) and 6 seconds later has a lease.

Sanity check: is there a parallel windows installation?
Also check the cable. Plugs are part of the cable and they exist on both sides.

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bartoszw

Member

Registered: 2020-02-25

Posts: 10

Re: [SOLVED] Slow connecting to the network after boot

I can't believe, I have changed cable and everything connecting instantly. It should the first thing to check. Thanks for help!

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 76,393

Re: [SOLVED] Slow connecting to the network after boot

I can.
Rule #1 - it's always the cable.

Please always remember to mark resolved threads by editing your initial posts subject - so others will know that there's no task left, but maybe a solution to find.
Thanks.

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