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#1 2023-05-19 01:50:03

bigcat
Member
Registered: 2023-05-10
Posts: 16  

[SOLVED] post-install problems: dhclient

I ran into a problem after installing on all four of my machines that I converted from debian, would appreciate some advice.

I installed Chimaera from a cdrom, and updated to testing.  I chose to use runit as init.  This is /etc/apt/sources.list that I used:

deb http://deb.devuan.org/merged testing main contrib non-free
deb-src http://deb.devuan.org/merged testing main contrib non-free

then I ran apt-get update; apt-get dist-upgrade.

I don't use NetworkManager which is disabled (chmod 644 /etc/init.d/network-manager - this took a mental effort after many years on systemd :) ). The /etc/network/interfaces file has

auto lo
iface lo inet loopback

allow-hotplug eth0
iface eth0 inet dhcp
root@kot:/home/user# ip 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 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether 70:85:c2:74:eb:5d brd ff:ff:ff:ff:ff:ff
    inet 192.168.1.2/24 brd 192.168.1.255 scope global dynamic eth0
       valid_lft 84535sec preferred_lft 84535sec
    inet6 fe80::7285:c2ff:fe74:eb5d/64 scope link 
       valid_lft forever preferred_lft forever

You can see that the interface is up with a valid IP, but
syslog is filling up with messages from dhclient:

2023-05-18T20:29:53.150541-05:00 kot dhclient[23535]: Failed to get interface index: No such device
2023-05-18T20:29:53.150548-05:00 kot dhclient[23535]: 
2023-05-18T20:29:53.150551-05:00 kot dhclient[23535]: If you think you have received this message due to a bug rather
2023-05-18T20:29:53.150554-05:00 kot dhclient[23535]: than a configuration issue please read the section on submitting
2023-05-18T20:29:53.150557-05:00 kot dhclient[23535]: bugs on either our web page at www.isc.org or in the README file
2023-05-18T20:29:53.150560-05:00 kot dhclient[23535]: before submitting a bug.  These pages explain the proper
2023-05-18T20:29:53.150563-05:00 kot dhclient[23535]: process and the information we find helpful for debugging.
2023-05-18T20:29:53.150566-05:00 kot dhclient[23535]: 
2023-05-18T20:29:53.150569-05:00 kot dhclient[23535]: exiting.

(also, the strange thing is that /var/log/syslog was rotated to syslog.1 but /var/log/syslog is now empty, and the log continues to go into syslog.1).

If anyone knows what could be the problem, either with the logger or dhclient, please post, thanks.

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#2 2023-05-19 01:53:27

bigcat
Member
Registered: 2023-05-10
Posts: 16  

Re: [SOLVED] post-install problems: dhclient

I think I found the problem a few minutes after posting.    Apparently the system starts dhclient when I have what I have in /etc/network/interfaces; however there is a dhclient service (under runit) in /etc/service.  After I removed it, things went back to normal.

Last edited by bigcat (2023-05-19 01:59:24)

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#3 2023-05-19 10:03:35

xinomilo
Unknown
Registered: 2017-07-02
Posts: 315  

Re: [SOLVED] post-install problems: dhclient

had a similar error, with dhclient+runit, and @Lorenzo (debian runit maintainer) fixed it in a runit-services 0.6.0 version in debian experimental.. maybe you should try that package, see if it helps.
removing service isn't a fix, you're just removing service so it doesn't run..

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#4 2023-05-20 12:42:22

bigcat
Member
Registered: 2023-05-10
Posts: 16  

Re: [SOLVED] post-install problems: dhclient

Thanks.

I think something starts dhclient if I have

allow-hotplug eth0
iface eth0 inet dhcp

in /etc/network/interfaces, I am guessing one of init scripts runs ifup which starts dhclient.

Removing the runit service prevents dhclient from starting twice.

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