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ttre
n00b
Joined: 04 Aug 2016
Posts: 29
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 Posted: Wed Aug 17, 2016 9:23 am Post subject: script for up interface |
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| Code: | enp0s29f0u1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.0.0.203 netmask 255.255.255.0 broadcast 10.0.0.255
inet6 fe80::26a5:b629:f948:92c3 prefixlen 64 scopeid 0x20<link>
ether 00:e0:4c:53:44:58 txqueuelen 1000 (Ethernet)
RX packets 11465 bytes 13286926 (12.6 MiB)
RX errors 174 dropped 39 overruns 50 frame 234
TX packets 8076 bytes 1762336 (1.6 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1 (Local Loopback)
RX packets 12 bytes 780 (780.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 12 bytes 780 (780.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wlp2s0b1: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether c4:46:19:0b:5b:dc txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 |
After some time wlp2s0b1 and enp0s29f0u1 are down.
I dont know why, maybe it is hardware problem.
I have to up my enp0s29f0u1 so I do:
# ifconfig enp0s29f0u1 down
# ifconfig enp0s29f0u1 up
# dhcpcd
1. Is possible to do script for automate it ?
Check for every 30s if enp0s29f0u1 is up, and if it's not do ifconfig enp0s29f0u1 down ; ifconfig enp0s29f0u1 up ; dhcpcd
2. Is there any log when I can see what happen in my hardware ?
Last edited by ttre on Sun Oct 30, 2016 9:08 am; edited 2 times in total |
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xaviermiller
Bodhisattva
Joined: 23 Jul 2004
Posts: 8708
Location: ~Brussels - Belgique
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| Posted: Wed Aug 17, 2016 9:25 am Post subject: |
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Hi!
If you run dhcpcd as a service, it will do it automatically for you.
_________________
Kind regards,
Xavier Miller |
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ttre
n00b
Joined: 04 Aug 2016
Posts: 29
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| Posted: Wed Aug 17, 2016 9:56 am Post subject: |
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I have:
| Code: | rc-update -a
binfmt | boot
bootmisc | boot
cronie | default
dbus | default
devfs | sysinit
dmesg | sysinit
fsck | boot
hostname | boot
hwclock | boot
keymaps | boot
killprocs | shutdown
kmod-static-nodes | sysinit
local | default
localmount | boot
loopback | boot
modules | boot
mount-ro | shutdown
mtab | boot
net.enp0s29f0u1 | default
netmount | default
procfs | boot
root | boot
savecache | shutdown
swap | boot
swapfiles | boot
sysctl | boot
sysfs | sysinit
syslog-ng | default
termencoding | boot
tmpfiles.dev | sysinit
tmpfiles.setup | boot
udev | sysinit
urandom | boot |
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ian.au
Guru
Joined: 07 Apr 2011
Posts: 592
Location: Australia
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ttre
n00b
Joined: 04 Aug 2016
Posts: 29
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| Posted: Thu Aug 18, 2016 3:22 pm Post subject: |
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| ok, it works now. |
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ttre
n00b
Joined: 04 Aug 2016
Posts: 29
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| Posted: Sun Oct 30, 2016 9:08 am Post subject: |
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| xaviermiller wrote: | Hi!
If you run dhcpcd as a service, it will do it automatically for you. |
Yes it works, but IP disappears for 20-40s, and after that it shows up again.
Usually IP shows only for few sec, and it disappears for 20-40s again.
ping to any site doesn't work in that time.
Is it possible to change frequency of dhcpcd checking status and take ip from router often than normal?
How to disable IPv6, maybe it helps ? |
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charles17
Advocate
Joined: 02 Mar 2008
Posts: 3664
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| Posted: Mon Oct 31, 2016 10:17 am Post subject: |
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| ttre wrote: | Yes it works, but IP disappears for 20-40s, and after that it shows up again.
Usually IP shows only for few sec, and it disappears for 20-40s again. |
Where do you see it appears or disappears? What do you have in your output of # dhcpcd -dB? |
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UberLord
Retired Dev
Joined: 18 Sep 2003
Posts: 6835
Location: Blighty
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| Posted: Mon Oct 31, 2016 3:45 pm Post subject: |
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dhcpcd (like nearly all network managers) removes the IP address when the carrier is lost.
When the carrier is aquired an address is renegotiated.
This is likey what you are seeing, so you're correct in that the software is reacting to a hardware issue.
dhcpcd does this so that there is almost zero chance of sending data from invalid (duplicate or wrong network) addresses because the kernel makes no attempt at deciding this.
Well, on Linux anyway. NetBSD -current does DaD for IPv4 addresses (only kernel which does this AFAIK) AND re-runs DaD for IPv4 and IPv6 when the carrier comes back up - sending from the address won't go anywhere until DaD hs completed. dhcpcd can take this into account so the IP address never vanishes and the application stands a good chance of continuing - like say ssh.
Anyway, I'm not really here to advertise NetBSD as it's a Gentoo forum, but if the above is really important to anyone then you know a little more.
_________________
Use dhcpcd for all your automated network configuration needs
Use dhcpcd-ui (GTK+/Qt) as your System Tray Network tool |
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