Arch B3 gets 2 IPs via DHCP on the interface?
Posted: 25 Sep 2017, 03:21
Hi,
I feel kind of stupid by posting a question I can probably figure out on my own, but here it's related to B3's networking - which is the only way to communicate with B3. The device is installed remotely, so if I mess up, it will stay down (well, up, but incommunicado) until I can get there. So, please help.
I have a B3 with Arch that constantly gets 2 IP addresses via DHCP:
Relevant log lines (reverse order):
Services:
What's clear to me is there are 2 services that ask for DHCP: dhcpd and systemd-networkd. From what I already googled, most probably I have netctl configured together with systemd-networkd. I tried to untangle the situation, which yielded me a trip to this remote location to fix, since I lost network connection.
If someone knows how to fix it, I will very much appreciate it.
I feel kind of stupid by posting a question I can probably figure out on my own, but here it's related to B3's networking - which is the only way to communicate with B3. The device is installed remotely, so if I mess up, it will stay down (well, up, but incommunicado) until I can get there. So, please help.
I have a B3 with Arch that constantly gets 2 IP addresses via DHCP:
Code: Select all
# ip a s
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 mq state UP group default qlen 1000
link/ether 00:22:02:00:42:f4 brd ff:ff:ff:ff:ff:ff
inet 192.168.1.107/24 brd 192.168.1.255 scope global dynamic eth0
valid_lft 28218sec preferred_lft 28218sec
inet 192.168.1.108/24 brd 192.168.1.255 scope global secondary eth0
valid_lft forever preferred_lft forever
inet6 fe80::aee0:549:54da:9ddf/64 scope link
valid_lft forever preferred_lft forever
3: eth1: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN group default qlen 1000
link/ether 00:22:02:00:42:f5 brd ff:ff:ff:ff:ff:ff
Code: Select all
Sep 23 14:41:16 kbsf-backup systemd-timesyncd[161]: Synchronized to time server 217.182.76.134:123 (2.arch.pool.ntp.org).
Sep 23 14:41:16 kbsf-backup systemd-timesyncd[161]: Network configuration changed, trying to establish connection.
Sep 23 14:41:16 kbsf-backup systemd-networkd[231]: eth0: Configured
Sep 23 14:41:16 kbsf-backup dhcpcd[189]: eth0: no IPv6 Routers available
Sep 23 14:41:09 kbsf-backup dhcpcd[189]: eth0: adding default route via 192.168.1.1
Sep 23 14:41:09 kbsf-backup dhcpcd[189]: eth0: adding route to 192.168.1.0/24
Sep 23 14:41:09 kbsf-backup dhcpcd[189]: eth0: leased 192.168.1.108 for 43200 seconds
Sep 23 14:41:04 kbsf-backup systemd-networkd[231]: eth0: Gained IPv6LL
Sep 23 14:41:04 kbsf-backup dhcpcd[189]: eth0: soliciting an IPv6 router
Sep 23 14:41:03 kbsf-backup dhcpcd[189]: eth0: probing address 192.168.1.108/24
Sep 23 14:41:03 kbsf-backup dhcpcd[189]: eth0: rebinding lease of 192.168.1.108
Sep 23 14:41:03 kbsf-backup systemd[1]: Started Hostname Service.
Sep 23 14:41:03 kbsf-backup systemd-timesyncd[161]: Network configuration changed, trying to establish connection.
Sep 23 14:41:03 kbsf-backup systemd-networkd[231]: eth0: DHCPv4 address 192.168.1.107/24 via 192.168.1.1
Sep 23 14:41:03 kbsf-backup dhcpcd[189]: eth0: adding address fe80::aee0:549:54da:9ddf
Sep 23 14:41:03 kbsf-backup dhcpcd[189]: eth0: IAID 02:00:42:f4
Sep 23 14:41:03 kbsf-backup dhcpcd[189]: DUID 00:01:00:01:1c:9f:f8:af:00:22:02:00:3a:ac
Sep 23 14:41:03 kbsf-backup systemd-networkd[231]: eth0: Gained carrier
Sep 23 14:41:03 kbsf-backup dhcpcd[189]: eth0: carrier acquired
Sep 23 14:41:03 kbsf-backup kernel: IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
Sep 23 14:41:03 kbsf-backup kernel: mv643xx_eth_port mv643xx_eth_port.0 eth0: link up, 1000 Mb/s, full duplex, flow control disabled
Code: Select all
atop.service loaded active running Atop advanced performance monitor
* auditd.service not-found inactive dead auditd.service
autossh.service loaded active running AutoSSH service for Central Dogma
bootled.service loaded active exited Turn Front Panel LED Green
bubba-buttond.service loaded active running Rear-button handler (buttond)
cronie.service loaded active running Periodic Command Scheduler
dbus.service loaded active running D-Bus System Message Bus
dhcpcd.service loaded active running dhcpcd on all interfaces
* display-manager.service not-found inactive dead display-manager.service
dm-event.service loaded inactive dead Device-mapper event daemon
emergency.service loaded inactive dead Emergency Shell
getty@tty1.service loaded active running Getty on tty1
haveged.service loaded active running Entropy Harvesting Daemon
initrd-cleanup.service loaded inactive dead Cleaning Up and Shutting Down Daemons
initrd-parse-etc.service loaded inactive dead Reload Configuration from the Real Root
initrd-switch-root.service loaded inactive dead Switch Root
initrd-udevadm-cleanup-db.service loaded inactive dead Cleanup udevd DB
kmod-static-nodes.service loaded active exited Create list of required static device nodes for the current kernel
ldconfig.service loaded inactive dead Rebuild Dynamic Linker Cache
logrotate.service loaded inactive dead Rotate log files
lvm2-lvmetad.service loaded inactive dead LVM2 metadata daemon
man-db.service loaded inactive dead Update man-db cache
mkinitcpio-generate-shutdown-ramfs.service loaded inactive dead Generate shutdown-ramfs
netctl.service loaded inactive dead (Re)store the netctl profile state
netctl@lan.service loaded inactive dead Networking for netctl profile lan
netctl@wan.service loaded inactive dead WAN Port on B3
* plymouth-quit-wait.service not-found inactive dead plymouth-quit-wait.service
* plymouth-start.service not-found inactive dead plymouth-start.service
rescue.service loaded inactive dead Rescue Shell
serial-getty@ttyS0.service loaded active running Serial Getty on ttyS0
setethermac@eth0.service loaded inactive dead Set MAC address of eth0
setethermac@eth1.service loaded inactive dead Set MAC address of eth1
shadow.service loaded inactive dead Verify integrity of password and group files
smartd.service loaded active running Self Monitoring and Reporting Technology (SMART) Daemon
sshd.service loaded active running OpenSSH Daemon
sshdgenkeys.service loaded inactive dead SSH Key Generation
* syslog.service not-found inactive dead syslog.service
systemd-ask-password-console.service loaded inactive dead Dispatch Password Requests to Console
systemd-ask-password-wall.service loaded inactive dead Forward Password Requests to Wall
systemd-binfmt.service loaded inactive dead Set Up Additional Binary Formats
systemd-firstboot.service loaded inactive dead First Boot Wizard
systemd-fsck-root.service loaded active exited File System Check on Root Device
systemd-fsck@dev-sda1.service loaded active exited File System Check on /dev/sda1
systemd-hwdb-update.service loaded inactive dead Rebuild Hardware Database
systemd-initctl.service loaded inactive dead /dev/initctl Compatibility Daemon
systemd-journal-catalog-update.service loaded inactive dead Rebuild Journal Catalog
systemd-journal-flush.service loaded active exited Flush Journal to Persistent Storage
systemd-journald.service loaded active running Journal Service
systemd-logind.service loaded active running Login Service
systemd-machine-id-commit.service loaded inactive dead Commit a transient machine-id on disk
systemd-modules-load.service loaded inactive dead Load Kernel Modules
systemd-networkd.service loaded active running Network Service
systemd-quotacheck.service loaded inactive dead File System Quota Check
systemd-random-seed.service loaded active exited Load/Save Random Seed
systemd-remount-fs.service loaded active exited Remount Root and Kernel File Systems
systemd-resolved.service loaded active running Network Name Resolution
systemd-rfkill.service loaded inactive dead Load/Save RF Kill Switch Status
systemd-sysctl.service loaded active exited Apply Kernel Variables
systemd-sysusers.service loaded inactive dead Create System Users
systemd-timesyncd.service loaded active running Network Time Synchronization
systemd-tmpfiles-clean.service loaded inactive dead Cleanup of Temporary Directories
systemd-tmpfiles-setup-dev.service loaded active exited Create Static Device Nodes in /dev
systemd-tmpfiles-setup.service loaded active exited Create Volatile Files and Directories
systemd-udev-trigger.service loaded active exited udev Coldplug all Devices
systemd-udevd.service loaded active running udev Kernel Device Manager
systemd-update-done.service loaded inactive dead Update is Completed
systemd-update-utmp.service loaded active exited Update UTMP about System Boot/Shutdown
systemd-user-sessions.service loaded active exited Permit User Sessions
systemd-vconsole-setup.service loaded inactive dead Setup Virtual Console
updatedb.service loaded inactive dead Update locate database
user@1000.service loaded active running User Manager for UID 1000
If someone knows how to fix it, I will very much appreciate it.